Now THAT'S impressive. Trilobites were quite possibly the most successful organisms EVER (aside from humans), and these delicate flower-things OUTLIVED them.
@user-ez2tq4vi8f Why is your first instinct to insult someone for sharing a fact they think is neat? Do you think of yourself as better and smarter? For what? Because you know a fact that someone else also knows? Did nobody ever tell you that knowledge is not inherently latent in all of humanity, or are you the type to throw a toddler into a forest and say, "surely if it be truly human, it knoweth how to pick itself up, create fire, and clean the waters to drink of!" Touching grass is not enough to ground you to reality. You need to Piss your Pants, NOW.
"before blood existed" Using seawater as blood has gotta be the most interesting fact in this video. That's mind blowing and makes me think that our blood being salty has it's origins in seawater.
@@Carlos-bz5oo "the salt ratio is not the same" So? I don't get your point. I'm not suggesting that blood is the same as seawater, only that it evolved from animals that lived in seawater and didn't yet have blood in their veins.
If you are going in the direction of relating the salinity of seawater to the salinity of blood, you need to start far away from humans. Currently I recall that the Na of sharks is normal at around 600+ mg/dL; for humans it is about 140 mg/dL. So 'when blood began' and 'the salinity of the oceans' are both variables.
@@janetchennault4385that seems like good places to start. The cognitive light cone hypothesis from Michael Liven has been used in similar calculations already and seems like it could be applied here.
If we're looking at all life since we started having things like tissues and organs, so much of us is just "how do we get the ocean, in us, onto land?". Out circulatory and pulmonary system is the best thing we can do without sitting in the ocean and diffusing (instead, air just goes into our damp lungs and diffuses, and then gets shuttled around). All reproduction has been "how do we put baby in ocean?" Baby in ocean contained by soft pouch; baby AND ocean, contained in hard shell; baby and ocean, in special ocean organ (now with slightly less salt!). I'm being reductive of course, but lots of evolutionary traits feel like they're doing something the ocean would have done for us, had we all just stayed like our distant cousins the cnidarians 😂
Hi I’d just like to point out one minor mistake! The animal shown at 1:31 is not a stalked crinoid, it’s a type of polychaete tube worm. You can tell because the ‘stalk’ is smooth and unsegmented, and the feathery tentacles don’t have the right anatomy. There are also generally too many ‘arms’ present.
I had to go and look it up, that looks nothing like the ones I found on the internet all of the worms are segmented at that one you pointed out is not segmented at all. Now I having nightmares of these dam worms yuck…..
Ah, the wonders of internet... There's always some knocker behind his keyboard out there, ready to strike at a most unsuspecting moment - *_Watch therefore, for ye know neither the day nor the hour..._* ;-) Seriously though, I do appreciate your knowledge and you making the correction. Yes, most people watching this couldn't care less - like that "Health Potion" fella here, and speaking of "health" ("physical" or... "otherwise") I'd recommend him changing his, erm, "supplier" - because that "potion" he's using now apparently "ain't doin' him no good", but I digress here... ;-)
A correction for your correction video, at 1:32 that isn't a sea lilly, crinoid or even an echinoid, that's a feather duster worm and type of polychaete worm.
Yup. Completely different animal phylum. Crinoids are echninoderms and polychaetes are annelids. Also, corals are animals. Albeit different to what we'd imagine animals being, I suppose.
I what way do they stick to you? Did you experience this? I'm fascinated by the thought because they just look like they would feel like a bunch of feathers.
@@SepiaMaddy They stick to you like velcro does on soft fabric. Yes I have, a couple of times, stuck to my wetsuit leg, but trying to unstick with hands doesn't work because they stick to the hand, luckily I always dive with torches, so I used one of those to remove them. The feel is kinda like glue-covered netting, kinda like those rubber nets you put under bathroom rugs, except stickier, and not as pliable.
You know what's wild? When I was a young kid we pretty much didn't know crinoids weren't extinct - it's wild to be a kid picking up fossils and then one day just see the living things themselves - I got so excited by the early footage
I love how some really ancient life just keeps on living and it's still here with us (in a cladistic sense, of course species differ now, except in super rare cars they don't at all). We still know so little about our deep past this helps to visualize how life could look like and better imagine it. Crynoids, sponges, many branches of bacteria and archea are around for hair a billion years and more, and they very well be present half a billion or more years after us. They not having blood blew my mind back when i was a child.
The e-coli in your gut predates all animals you can think of 😂 cladistically of course but basically it’s the principle of you don’t change a winning team 😂
@@dreammaker9642 Yep, many branches of bacteria can be over a billion years old as I've said. And also tardigrades are around 550mya old, proven virtually unchanged since at least the cretaceous. Or how Lepismatidae are over 400 my old and Lepisma saccharinum (still have to remind myself of it's gender change to this very day) itself looks virtually indistinguishable for well over 300 my old specimens. An viruses predate LUCA who knows by how many millions of years... (As LUCA already had an immune system formed against them, according to a research paper released after my og comment. How cool is that?) I wonder if ever we may able to solve the ancient question unequivocally as wether viruses have evolved for more complex parasitic proto cells as most parasites do, or a whole different branch of life forming from the same building blocks in the "primordial soups" of black smoke chimneys and/or those special "chambers".
I cataloged the Springer collection at the Smithsonian and my duties were exclusively crinoids! Many of the items you have pictures of I put into our excel database. I only worked on sea lilies and got so good at identifying them I was allowed to make corrections to identifications despite just being a volunteer (I always consulted with a professional first before making an official determination). Love to see these guys get featured because they are truly remarkable creatures!
Uses ocean water for blood? Well, little acknowledged fact; Yeah, if you're Navy-Navy and a Navy kid, you know.... during hard up times? Seawater ultra-filtered, and ultra-sterilized (250f/0psi) can be used as basic Saline. I know it sounds nuts, but typical Saline is on par with seawater. Evolutionary touch marks are AMAZING!
Saline is just water, salts and glucose but it’s not sea water or on par with it. If you just IV yourself with sea water you’ll kick the bucket real fast cause one, not nearly the same dosage basically saline will replenish your electrolytes while just sea water even sterilised is going to shoot it up to lethal dose real fast. But point taken but you better off getting fresh clean water, sprinkling some salt and sugar in there. The glucose is important as it speeds the process of hydration for your cells.
@@dreammaker9642 I'm high as balls RN so take this with a grain of salt (pun intended), but I think the mass transfer is totally different from drinking seawater. Seawater pulls water out through colon like reverse drinking, but injecting seawater is increasing blood volume by definition of injecting. So if anything the colon would have like a more intense suction LOL phrasing. I could see how it might lead to death if too much were added, but hospital saline isn't a perfect substitute for whole blood anyhow, so it's a matter of which thing kills the patient first: lack of living blood components or salt poisoning. As long as the blood components run out first it doesn't matter what the salt concentration is because the patient would have to be dead before getting sick, thus not getting sick for realsis. But even if that is the final problem, it's not the correct comparison to be making. Your real choices are, "take it or leave it." So if seawater is better than nothing then seawater it is indeed. What is it the glucose id doing? That's really interesting and it's got me curious :)
@@danielculver2209 ok you have the semi right idea but that’s not really how any of it works and I don’t blame you cause even my biology degree doesn’t go into as much detail if you really want to know you’d have to go to mes school. First of all let’s clear something up which could save your life. If you ever stranded at sea don’t drink sea water for two reasons, salt indeed absorbs water so a very salty water that you drink will dehydrate you but it’s also full of micro organisms that will 100% make you sick causing diarrhea making you dehydrated even faster. Urine is even a better short term. Now drinking and IV is not the same, if you IV straight sea water two things will kill you an infection from then nasty microorganisms that live in there and salt dosage. See your body needs to have a careful balance of ions such as potassium, sodium and others which to spare you the chemistry we will simplify and call them salt (it’s more complex than that but to avoid confusion it’s fine) same way you body needs to be at a certain temperature to function properly, too low or too high not good and the closer to the extremes the more dire. Your colon in the case of an IV has nothing to do here, the point of an IV is to by pass the colon and go straight in your blood hence why if you severely dehydrated you given saline by IV but it’s very carefully dosed otherwise it would kill you. By doing that we can also add vitamins you might need, etc but like with anything too little will do little and too much you’ll OD. The reason why you need it with glucose is because your cells need certain ions to do other jobs, water for example can pass in and out cell membranes passively by osmosis, high concentrations go to low concentration. Blood has a high concentration of water so when a cell needs it because it has a low concentration then osmosis happens and it gets a refill (google osmosis for more detail in that but it’s as simple as that really). That’s called passive transport but ions like sodium can’t do that, they too big to fro through the cell membrane as per design so there are special proteins attached that facilitates the transfer, this is called active transport and it requires a bunch of chemical reactions I won’t get into (either google or enroll in a biology intro class to really understand it cause there’s lots going on) and to do that it needs energy or ATP. To make ATP you need glucose which you get from different sugars but that’s the easiest for your cells to break into ATP. So glucose is not necessary unless you extremely dehydrated but if you need an IV then yeah you need the glucose to. Naturally when you eat you get the glucose so that whole process is balanced. So from that you can understand having way too much water or having way too much of any of the salts can disturb this carefully balanced system and cause problems. Little too much little problems and way too much big problems aka lethal. With most things dosage related it’s about balance, eat too much salt you dehydrate your cells, don’t eat enough and they can’t facilitate nutrients from your blood to the cell. Don’t drink enough water and your blood lacks water and gets too thick, drink way too much water your cells fill up with water and pop. So it’s case by case, if you somehow down 10L of water in one sitting you will die. Biology is similar to chemistry where it’s all about keeping the system balanced to achieve the designed outcome. Hope this helps, there’s a channel called In a Nutshell that covers topics like this with great animation and good info. I love watching it while I’m seshing and they cover a wide variety of topics from the human body to outer space and they provide their bibliography so you can go read their sources. It’s really cool
(1) EXTREMELY cool content, some of which I was already aware of (and still find to be fascinating). (2) Thanks for the updates to correct and elucidate.
That is awesome all this time I thought crinoids were all left behind in the Devonian! They are still with us! Now someone needs to discover trilobites still exist somewhere.
Ok this is weird. I have been subscribed to this channel with the bell on since day 1 of its first launch, this is the only notification I have gotten for this channel ever and I just looked at your library of video's. To say I'm quite miffed is an understatement. I have found everything that Hank works on our with to be informed, informative and just enjoyable to watch. Even if Hank isn't the one giving the presentation. I have used Sci Show and PBS's UA-cam channels to educate myself and many others over the years. The videos are all a great jump off point to learn more about whatever the topic is that has peaked your interest. Honestly I think it was a PBS program on television (I'm way way older than the internet) that set me on my career path to becoming a Geologist. For me it's been worth the little time and money invested into watching and supporting programs like these because I am able to share the knowledge. And who knows maybe I will share the information in this video or share the video and someone is inspired to become a marine biologist. The crux of what is angering me about not getting notifications is not a UA-cam algorithm issue but a Canadian government issue. I know that because this is an educational program presented by Americans and not Canadians my government has been blocking the notifications, attempting to force me to watch Canadian made content.
Well our scientific programs are not known for their accuracy. Particularly since we basically have to give airtime to things that aren't true. Flat Earth theories, ancient aliens, etc.
dr crinoid: "i don't understand, i injected 2 packages of seawater into my patient, but he still couldnt survive! the human on the table: *falls off of the table*
Same! It makes me so happy that they still get used and are still AS useful as back when I first saw the site. (Which was longer ago than I'm gonna admit today haha)
This is one of the most interesting, fun, and attention-earning things I've watched in YEARS. I can watch the same thing for hours, but this? This is literally *_SUPER_* interesting! I WANT to watch this. Considering it's educational, that's impressive
No. No no no. You don't get to just casually host this episode rocking one of the best leather jackets I have ever seen and not talk about it. Where did you find that amazing piece of clothing?!?
Haha! Thanks! I got it at a shop in Las Vegas (I think it was called "One Monarchy"). I am a little worried if I put a pin in it in just the wrong way I will destroy the mesh, but it does look so dang cool! - Sarah
I could see sea urchins as being the reason that feather stars evolved, if the shallow, warm-water environments had previously been occupied by stalked varieties. That would depend on when the sea urchins evolved.
Thank you for beating me to it! Searched for this comment to see whether I had to say it! Kind of a major embarrassment not to have caught that on their *_second_* time through this video.
Imagine being one of the first people to dive to the ocean floor and the first thing you see is a weird "flower" run around and drag its stock after it.😂
That was a very interesting video - thanks! These specific creatures don't get enough attention. On an unrelated note, Sarah's black jacket is also quite unique!
Iron saline solution is why our blood is what it is.WE live on an iron saline blood cell. Sponges breathe the same way. Breathing the saline solution. That's the first origins of our heart,lungs blood and stomach.
Woooooo! Someone else talking about how rad sea stars are!!!!!!! Let's goooo! Fun fact: pycnopodia is a sea star which can get to the size of a manhole cover and has way too many arms (15-20+). Feather stars are so beautiful! Ahhh I'm so happy someone is talking about these guys! They're so rad! The fact that they use the hydraulics of the sea water to move their little tube feet is so cool.
I live in Missouri and I have seen these fossils when I’ve been hiking through dry river beds. I saw a big nautilus shell fossil in Texas, right on the trail! It was cool. I’m glad to know more about these.
What a magnificent and yet fitting name "feather star" as if it's some kind of starlet or diva. It's locomotion certainly doesn't dispel the connotation
0:32 Hmm I think it would be helpful to maybe do voice-overs of incorrect information. Visually impaired people might not see the corrections in the video itself.
I recall a 7th grade field trip to a rock quarry where we pawed through a huge pile of crumbled shale and that was full of crinoid rings. So many, they got boring and it was an event to find something else.
This is a species that hung out with trilobites *and survived what killed them.*
Now THAT'S impressive. Trilobites were quite possibly the most successful organisms EVER (aside from humans), and these delicate flower-things OUTLIVED them.
thanks captian obvious
@@flickcentergaming680humans haven’t been around anywhere near long enough to say we’re successful.
Are you silly? That's not how evolution works.
@user-ez2tq4vi8f
Why is your first instinct to insult someone for sharing a fact they think is neat?
Do you think of yourself as better and smarter? For what? Because you know a fact that someone else also knows?
Did nobody ever tell you that knowledge is not inherently latent in all of humanity, or are you the type to throw a toddler into a forest and say, "surely if it be truly human, it knoweth how to pick itself up, create fire, and clean the waters to drink of!"
Touching grass is not enough to ground you to reality.
You need to Piss your Pants, NOW.
This explains the crinoid proverb: "Blood is the exact same thickness as water"
.^_^.
Absolutely underated comment. Literally made me laugh out loud.
Made me groan, have a like! 😂
This is what the internet was made for. Superb.
Ow XD
Surgery must be easy for them. Nurse, I need 50 cc of seawater.
I'm imagining crinoids as surgeons now 😂
@@catboy_official All the motions are the same, but when they move away the surgery is done.
And now they to get that much seawater without viruses.
Good luck.
"Doctor, his arm's off!"
"It'll grow back."
Interesting take. I was thinking surgery might be hard for them on account of the fact that they have no brain.
“Nah, I’m out” -Crinoid 250 mil years ago.
does this mean he’ll be back 🫣
@@rhiannonm8132 I mean the ocean is real big, so maybe? Not on purpose though. The feather star's dad is out for milk.
can you do a video on comorans too? They too are called living fossils - they're not!
They're a beautifully vivid branch of like!
"Where you goin??" -Sea Urchin
is he next up out of the cambrian 👀👀👀💣💣❗❗⁉️⁉️
Sea urchin: *exists
Crinoids: "aight, imma head out"
Ah, the ocean, the only place on the planet where animals can look like plants (without the use of mimicry)
many bugs do the same
Probably because it’s a lot harder to filter feed from the air.
Lichens would like a word
@@StonedtotheBones13 *would lich
@@TrungTran-yg3uv The stick insects being particularly excellent mimics.
"before blood existed"
Using seawater as blood has gotta be the most interesting fact in this video. That's mind blowing and makes me think that our blood being salty has it's origins in seawater.
Eh, the salt ratio is not the same between blood and seawater
@@Carlos-bz5oo "the salt ratio is not the same"
So? I don't get your point. I'm not suggesting that blood is the same as seawater, only that it evolved from animals that lived in seawater and didn't yet have blood in their veins.
If you are going in the direction of relating the salinity of seawater to the salinity of blood, you need to start far away from humans. Currently I recall that the Na of sharks is normal at around 600+ mg/dL; for humans it is about 140 mg/dL. So 'when blood began' and 'the salinity of the oceans' are both variables.
@@janetchennault4385that seems like good places to start.
The cognitive light cone hypothesis from Michael Liven has been used in similar calculations already and seems like it could be applied here.
If we're looking at all life since we started having things like tissues and organs, so much of us is just "how do we get the ocean, in us, onto land?". Out circulatory and pulmonary system is the best thing we can do without sitting in the ocean and diffusing (instead, air just goes into our damp lungs and diffuses, and then gets shuttled around). All reproduction has been "how do we put baby in ocean?" Baby in ocean contained by soft pouch; baby AND ocean, contained in hard shell; baby and ocean, in special ocean organ (now with slightly less salt!).
I'm being reductive of course, but lots of evolutionary traits feel like they're doing something the ocean would have done for us, had we all just stayed like our distant cousins the cnidarians 😂
sea lilly: **walks**
me: that's illegal
And what exactly are you gonna do about it? Swim down there and arrest a mfkr that predates *_the concept of your ancestors' ancestors???_*
Found the urchin
Hi I’d just like to point out one minor mistake! The animal shown at 1:31 is not a stalked crinoid, it’s a type of polychaete tube worm. You can tell because the ‘stalk’ is smooth and unsegmented, and the feathery tentacles don’t have the right anatomy. There are also generally too many ‘arms’ present.
I had to go and look it up, that looks nothing like the ones I found on the internet all of the worms are segmented at that one you pointed out is not segmented at all. Now I having nightmares of these dam worms yuck…..
@@dawsie the worm itself is inside the tube. It creates a tube to live in, which is smooth, but the worm inside is segmented
@@dawsie they're cute lmao what are you even yapping about?
@@HealthXPotionsoh, you said yapping, guess you showed them for... having a subjective opinion.
Ah, the wonders of internet... There's always some knocker behind his keyboard out there, ready to strike at a most unsuspecting moment - *_Watch therefore, for ye know neither the day nor the hour..._* ;-)
Seriously though, I do appreciate your knowledge and you making the correction. Yes, most people watching this couldn't care less - like that "Health Potion" fella here, and speaking of "health" ("physical" or... "otherwise") I'd recommend him changing his, erm, "supplier" - because that "potion" he's using now apparently "ain't doin' him no good", but I digress here... ;-)
Can't get blood infections **taps temple**
If you don't have blood
They must never need to have bloodwork done, either.
Doctors hate this one weird trick!/jk
you: feather star
me, an intellectual: biblically accurate feather duster
When something that is, for god and everyone, seemingly just a plant
Gets up...and WALKS AWAY
For God and everyone 😂😅
that's a sign I'm in _entirely_ the wrong neighborhood, I tell you what
Just think. Evolution is proven bs right here
@@LexYeennah you're broadening your horizons and thats exactly whats needed
Except it’s not a plant because by definition plants don’t move because by definition plant cells have cell walls.
Biblically accurate angels of the sea.
I was looking for this comment 😂
We will find out that they have thousands of tiny eyes covering their arms and that they are technically immortal.
She looks like Hannah Pearl Davis. They shall repeal the 19th together.
except that the bible is full of contradictions.
@@omega311888 such is life
A correction for your correction video, at 1:32 that isn't a sea lilly, crinoid or even an echinoid, that's a feather duster worm and type of polychaete worm.
+
Yup. Completely different animal phylum. Crinoids are echninoderms and polychaetes are annelids. Also, corals are animals. Albeit different to what we'd imagine animals being, I suppose.
Ah yes, nature's velcro. I can't emphasize enough how much these will stick to you.
please do not, my imagination is plenty.
crinoid hugs
I don't know the name of the phobia but im sure i have it because of what u just made me think of these things thanks 😂😂
I what way do they stick to you? Did you experience this? I'm fascinated by the thought because they just look like they would feel like a bunch of feathers.
@@SepiaMaddy They stick to you like velcro does on soft fabric. Yes I have, a couple of times, stuck to my wetsuit leg, but trying to unstick with hands doesn't work because they stick to the hand, luckily I always dive with torches, so I used one of those to remove them. The feel is kinda like glue-covered netting, kinda like those rubber nets you put under bathroom rugs, except stickier, and not as pliable.
You know what's wild? When I was a young kid we pretty much didn't know crinoids weren't extinct - it's wild to be a kid picking up fossils and then one day just see the living things themselves - I got so excited by the early footage
2:40, this is giving *_-"B̸è̶ ̶n̶ô̵t̴ ̵a̷f̴r̶ã̷ï̶d"-_* energy. Like a sea angel.
I love how some really ancient life just keeps on living and it's still here with us (in a cladistic sense, of course species differ now, except in super rare cars they don't at all).
We still know so little about our deep past this helps to visualize how life could look like and better imagine it.
Crynoids, sponges, many branches of bacteria and archea are around for hair a billion years and more, and they very well be present half a billion or more years after us.
They not having blood blew my mind back when i was a child.
The e-coli in your gut predates all animals you can think of 😂 cladistically of course but basically it’s the principle of you don’t change a winning team 😂
@@dreammaker9642
Yep, many branches of bacteria can be over a billion years old as I've said.
And also tardigrades are around 550mya old, proven virtually unchanged since at least the cretaceous.
Or how Lepismatidae are over 400 my old and Lepisma saccharinum (still have to remind myself of it's gender change to this very day) itself looks virtually indistinguishable for well over 300 my old specimens.
An viruses predate LUCA who knows by how many millions of years... (As LUCA already had an immune system formed against them, according to a research paper released after my og comment. How cool is that?) I wonder if ever we may able to solve the ancient question unequivocally as wether viruses have evolved for more complex parasitic proto cells as most parasites do, or a whole different branch of life forming from the same building blocks in the "primordial soups" of black smoke chimneys and/or those special "chambers".
Who needs aliens when we have most sea life?
Me: Of course it can Hank, it's a lionfish
The featherstar:
I thought the thumbnail was a lionfish at first glance too.
@@weirdredpanda Could be some Batesian mimicry, but I haven't found anything mentioning it
Oh, those swimming feather stars are lovely. Mesmerizing to watch.
"Predation by ancient urchins" is my new favorite reason to relocate.
im gonna begin calling people "Ancient Urchins"
Come for the sea lilies stay for that jacket 😎
I gotta find that jacket, it's so cool!
That jacket is 🔥
I cataloged the Springer collection at the Smithsonian and my duties were exclusively crinoids! Many of the items you have pictures of I put into our excel database. I only worked on sea lilies and got so good at identifying them I was allowed to make corrections to identifications despite just being a volunteer (I always consulted with a professional first before making an official determination). Love to see these guys get featured because they are truly remarkable creatures!
The feather star is one of my fave creatures! I had one in a tank some time ago... Loved watching it swim.
The thing I love about scishow comments is you get people arguing in scientific facts
Science papers are often just long passive aggressive arguments going “nuh-uh!” At some other scientist.
Uses ocean water for blood? Well, little acknowledged fact; Yeah, if you're Navy-Navy and a Navy kid, you know.... during hard up times? Seawater ultra-filtered, and ultra-sterilized (250f/0psi) can be used as basic Saline. I know it sounds nuts, but typical Saline is on par with seawater. Evolutionary touch marks are AMAZING!
Saline is just water, salts and glucose but it’s not sea water or on par with it. If you just IV yourself with sea water you’ll kick the bucket real fast cause one, not nearly the same dosage basically saline will replenish your electrolytes while just sea water even sterilised is going to shoot it up to lethal dose real fast. But point taken but you better off getting fresh clean water, sprinkling some salt and sugar in there. The glucose is important as it speeds the process of hydration for your cells.
@@dreammaker9642 I'm high as balls RN so take this with a grain of salt (pun intended), but I think the mass transfer is totally different from drinking seawater. Seawater pulls water out through colon like reverse drinking, but injecting seawater is increasing blood volume by definition of injecting. So if anything the colon would have like a more intense suction LOL phrasing.
I could see how it might lead to death if too much were added, but hospital saline isn't a perfect substitute for whole blood anyhow, so it's a matter of which thing kills the patient first: lack of living blood components or salt poisoning. As long as the blood components run out first it doesn't matter what the salt concentration is because the patient would have to be dead before getting sick, thus not getting sick for realsis.
But even if that is the final problem, it's not the correct comparison to be making. Your real choices are, "take it or leave it." So if seawater is better than nothing then seawater it is indeed.
What is it the glucose id doing? That's really interesting and it's got me curious :)
@@danielculver2209 ok you have the semi right idea but that’s not really how any of it works and I don’t blame you cause even my biology degree doesn’t go into as much detail if you really want to know you’d have to go to mes school.
First of all let’s clear something up which could save your life. If you ever stranded at sea don’t drink sea water for two reasons, salt indeed absorbs water so a very salty water that you drink will dehydrate you but it’s also full of micro organisms that will 100% make you sick causing diarrhea making you dehydrated even faster. Urine is even a better short term. Now drinking and IV is not the same, if you IV straight sea water two things will kill you an infection from then nasty microorganisms that live in there and salt dosage.
See your body needs to have a careful balance of ions such as potassium, sodium and others which to spare you the chemistry we will simplify and call them salt (it’s more complex than that but to avoid confusion it’s fine) same way you body needs to be at a certain temperature to function properly, too low or too high not good and the closer to the extremes the more dire. Your colon in the case of an IV has nothing to do here, the point of an IV is to by pass the colon and go straight in your blood hence why if you severely dehydrated you given saline by IV but it’s very carefully dosed otherwise it would kill you. By doing that we can also add vitamins you might need, etc but like with anything too little will do little and too much you’ll OD.
The reason why you need it with glucose is because your cells need certain ions to do other jobs, water for example can pass in and out cell membranes passively by osmosis, high concentrations go to low concentration.
Blood has a high concentration of water so when a cell needs it because it has a low concentration then osmosis happens and it gets a refill (google osmosis for more detail in that but it’s as simple as that really).
That’s called passive transport but ions like sodium can’t do that, they too big to fro through the cell membrane as per design so there are special proteins attached that facilitates the transfer, this is called active transport and it requires a bunch of chemical reactions I won’t get into (either google or enroll in a biology intro class to really understand it cause there’s lots going on) and to do that it needs energy or ATP. To make ATP you need glucose which you get from different sugars but that’s the easiest for your cells to break into ATP.
So glucose is not necessary unless you extremely dehydrated but if you need an IV then yeah you need the glucose to. Naturally when you eat you get the glucose so that whole process is balanced. So from that you can understand having way too much water or having way too much of any of the salts can disturb this carefully balanced system and cause problems. Little too much little problems and way too much big problems aka lethal.
With most things dosage related it’s about balance, eat too much salt you dehydrate your cells, don’t eat enough and they can’t facilitate nutrients from your blood to the cell. Don’t drink enough water and your blood lacks water and gets too thick, drink way too much water your cells fill up with water and pop.
So it’s case by case, if you somehow down 10L of water in one sitting you will die. Biology is similar to chemistry where it’s all about keeping the system balanced to achieve the designed outcome. Hope this helps, there’s a channel called In a Nutshell that covers topics like this with great animation and good info. I love watching it while I’m seshing and they cover a wide variety of topics from the human body to outer space and they provide their bibliography so you can go read their sources. It’s really cool
They said at the start that the seawater was filtered and sterilized first @@dreammaker9642
@@dreammaker9642hey, this was dope and you went above and beyond. Thanks man
Honestly the way that sea lilies move is more unsettling to me.
Yes, like it was ravaged in a horror movie.
The Crinoid episode definitely was my favorite of season 0! Loved the additinons you made to it
+
This is my first time discovering this channel and I’ve been watching sci show for years now
"Good morning John," says Hank's voice at the start of this video. Was Hank addressing me? Did anyone else get a "good morning?
The original video was written to Hank’s brother John
I choose to believe he was greeting you specifically
I did, but I am also a John. Any Non-Johns out there get a greeting?
@johnmueller6240 - No, just _you._ Out of all of us, he likes you best!
@@MossyMozart I figured as much. Nobody likes me. Must be my breath.
Oooh I did not know the ones with the stalk could drag themselves. Lots of interesting things in here :D
I know that technically, organisms are just living, breathing hydraulic machines, but these little guys took it literally
(1) EXTREMELY cool content, some of which I was already aware of (and still find to be fascinating).
(2) Thanks for the updates to correct and elucidate.
Feather stars moving look like ballet dancers to me - beautiful!
That is awesome all this time I thought crinoids were all left behind in the Devonian! They are still with us! Now someone needs to discover trilobites still exist somewhere.
It wouldn't surprise me if they do. I think they found brachiopods alive somewhere.
That swimming pattern is hypnotic.
like watching a spider swim the breastroke
definitively 'biblically accurate' eldritch creature core
Ok this is weird. I have been subscribed to this channel with the bell on since day 1 of its first launch, this is the only notification I have gotten for this channel ever and I just looked at your library of video's. To say I'm quite miffed is an understatement.
I have found everything that Hank works on our with to be informed, informative and just enjoyable to watch. Even if Hank isn't the one giving the presentation. I have used Sci Show and PBS's UA-cam channels to educate myself and many others over the years.
The videos are all a great jump off point to learn more about whatever the topic is that has peaked your interest. Honestly I think it was a PBS program on television (I'm way way older than the internet) that set me on my career path to becoming a Geologist. For me it's been worth the little time and money invested into watching and supporting programs like these because I am able to share the knowledge. And who knows maybe I will share the information in this video or share the video and someone is inspired to become a marine biologist.
The crux of what is angering me about not getting notifications is not a UA-cam algorithm issue but a Canadian government issue. I know that because this is an educational program presented by Americans and not Canadians my government has been blocking the notifications, attempting to force me to watch Canadian made content.
Well our scientific programs are not known for their accuracy. Particularly since we basically have to give airtime to things that aren't true. Flat Earth theories, ancient aliens, etc.
They are mesmerizing and amazing, I wish them a long future where they fly into the sky or something, idk, I think they'd like that.
Not a lot of thing to eat in the air...
@@mecha-sheep7674 not with that attitude.
Another few hundred million years and we will be gone but by then these fellas might as well have figured out how to walk on land.
Well they kinda look like biblically accurate angels.
dudeeee if these things flew in the area a couple hundred years ago they'd totally spawn a cult
it'd look AWESOME tho
Oh! This is one of the Season Zero pins that glows in the dark!!!!!!!!
I love it.
She looks like Hannah Pearl Davis. They shall repeal the 19th together.
“Everybody keeps telling me how MY story is supposed to go, NAH, imma do my own thing-“
- Featherstar Morales
Biblically accurate angels.
They usually say don't be afraid when they show up in their true form, so yeah. This explains it quite well tbh.
Hank's script and delivery are superb👏
I was amazed-amused-excited fully nerding-out right along with you, good Sir 🤓
Man kind is dead
Water is fuel
The ocean is full
dr crinoid: "i don't understand, i injected 2 packages of seawater into my patient, but he still couldnt survive!
the human on the table: *falls off of the table*
I'm reminded how invaluable Christopher Scotese's maps etc are.
Same! It makes me so happy that they still get used and are still AS useful as back when I first saw the site. (Which was longer ago than I'm gonna admit today haha)
@@Beryllahawk
Indeed.
I used to do some althis stuff and they were amazing in visualising alternative continents.
I love this video :D (and thanks for, rather than remaking a favorite, you added the new stuff - great approach I've never seen that!)
Booking vacations on the Tethys Sea now.
This is one of the most interesting, fun, and attention-earning things I've watched in YEARS. I can watch the same thing for hours, but this? This is literally *_SUPER_* interesting! I WANT to watch this. Considering it's educational, that's impressive
ROV SuBastian has live streamed hundreds of crinoids over the years, always a treat to see them swim
Adorable name for a rov
What a great video! I’ve never seen feather stars moving. It’s gorgeous! Thank you.
Urchin’s gona getcha, nom nom nom. Then the Sea Lily let out the world’s first scream 500 million years ago.
Soooooo cool! Also, I'm stoked y'all are bringing this back!
No. No no no. You don't get to just casually host this episode rocking one of the best leather jackets I have ever seen and not talk about it. Where did you find that amazing piece of clothing?!?
Haha! Thanks! I got it at a shop in Las Vegas (I think it was called "One Monarchy"). I am a little worried if I put a pin in it in just the wrong way I will destroy the mesh, but it does look so dang cool! - Sarah
3:34 The way these things look and move remind me a lot of triffids from Wyndham's Day of the Triffids, I wonder if he was inspired by them or not
You combine this with a squid or octopus and you have Lovecraft horrors.
1:04 looks like something H.R Geiger would come up with.
She looks like Hannah Pearl Davis. They shall repeal the 19th together.
Sea Lilies walked so Feather Stars could swim.
I could see sea urchins as being the reason that feather stars evolved, if the shallow, warm-water environments had previously been occupied by stalked varieties. That would depend on when the sea urchins evolved.
November 24th is International Featherstar Appreciation Day
I love how your outfit matches not just the background set but also the theme. 😊❤️
Came for the Hank. Stayed for the flappy flappy feather swimming 😂🙏
This was amazing, thank you so much for retaking it!! 👏🏻👏🏻💪🏻💪🏻
I knew crinoids were still around, but I didn't know any of the extant species were sealilies
Both stalked and non stalked crinoids are the solo branch of a line that was very diverse in looks from Ordovician up to Mississippi period.
Cool video. 2:31 They're both in the Kingdom Animalia, so corals are also animals.
Thank you for beating me to it! Searched for this comment to see whether I had to say it!
Kind of a major embarrassment not to have caught that on their *_second_* time through this video.
This 🌟 is weird as heck and truly bizarre
Imagine being one of the first people to dive to the ocean floor and the first thing you see is a weird "flower" run around and drag its stock after it.😂
Biblically accurate angels do not exist, they cannot harm you.
Biblically accurate angel:
fear not
b e n o t a f r a i d
The editing could use some work, but Hank is always a diamond in every science channel.
Featherstars decided to contribute to the slickback dance trend
I thought I read an article years ago about sea creatures being able to live in a tank of blood.
I am using this in my book. There isn’t anyone who can stop me.
That was a very interesting video - thanks! These specific creatures don't get enough attention. On an unrelated note, Sarah's black jacket is also quite unique!
Iron saline solution is why our blood is what it is.WE live on an iron saline blood cell. Sponges breathe the same way. Breathing the saline solution. That's the first origins of our heart,lungs blood and stomach.
Would be interesting to know how long crinoids live. Sounds like they could possibly live a long time.
Just by looking at it, it's obvious how it can swim.lots of surface area as resistance, so it works like a paddle.
Woooooo! Someone else talking about how rad sea stars are!!!!!!! Let's goooo!
Fun fact: pycnopodia is a sea star which can get to the size of a manhole cover and has way too many arms (15-20+).
Feather stars are so beautiful! Ahhh I'm so happy someone is talking about these guys! They're so rad! The fact that they use the hydraulics of the sea water to move their little tube feet is so cool.
This thing moves like a higher dimensional spider and I hate it.
Imagine basically a plant evoling to run away from predators 💀
Not "basically a plant", though. (Meanwhile, *_actual_* plants have evolved to *_be_* predators, so...)
"... predation by ancient urchins..." must have been both fun and tricky to say 4:36
it swims in an ocean of its own blood it is metal AF
Biblically Accurate Sea Creatures lol
3:35 Mom used to say "Exactly the same only different." It's surprising how often that's true.
Samuel Z. Arkoff and American International Pictures really missed out on the ultimate nightmare creature.
I live in Missouri and I have seen these fossils when I’ve been hiking through dry river beds. I saw a big nautilus shell fossil in Texas, right on the trail! It was cool. I’m glad to know more about these.
Predation by ancient urchins. That's an album title.
What a magnificent and yet fitting name "feather star" as if it's some kind of starlet or diva. It's locomotion certainly doesn't dispel the connotation
"Don't be afraid"
Always wanted to learn more about these fringe fellas! Thanks!
I saw many feather stars on shore after a storm
My brain can't handle the sheer amount of cuts, cutaways, different voices, pictures, tones.
0:32 Hmm I think it would be helpful to maybe do voice-overs of incorrect information. Visually impaired people might not see the corrections in the video itself.
I agree
Can I just say that I LOVE your jacket? Seriously, where the hell did you get that?
Bilblically authentic angels?
I recall a 7th grade field trip to a rock quarry where we pawed through a huge pile of crumbled shale and that was full of crinoid rings. So many, they got boring and it was an event to find something else.
2:24 You contrast crinoids being animals with coral as if corals aren't animals, but corals are animals too...
Look like a animal everyone thinks is a monster but ends of being a companion to the man or side character in a deep sea horror film.
I think the Closest animal I can compare these Feather Stars are Biblical Accurate Angels
TFW you learn for the first time that you share a planet with underwater animal trees