I just felt an intense flashback to high school presentations : "These are sea slugs. They live in the sea, because they are sea dwelling slugs. But these sea dwelling sea slugs don't only live in the sea, but they also live in oceans."
Great animal of the week! 🤩 Melibe viridis are pretty cool! For me, their most unique attribute is their method of feeding. They have lost their radular teeth and have developed the oral veil into a large veil or "fish net" which they use to constantly scan the substrate as they crawl along. When touching a small crab or crustacean the edge of the veil is rapidly contracted, trapping the prey, which is then ingested.
It is indeed against the laws of a universe to have a nudibranch that isn't utterly fascinating in its alien beauty. It runs in their very being. Perfect boneless lumps of squish, all of them.
@@Glory2Snowstar perfect blobs of thee most exquisite colors and patterns on such a teeny tiny canvas. Bucket wish...that I could have one of each, kept in a tank for a lifetime of joy. Of course I would live in the ocean if I could.
when I was a kid, there was a "toy", a chemical product really, called 'Slime'. If that product were to get flushed out to sea & suddenly become animate, This is probably the form it would take.
Something I found super fascinating about this animal is the glide symmetry of its "leg" lobes. I've never seen anything like this in modern Bilaterians (although I'm sure there are loads of more subtle examples, like patterning). The first and last pair have lobes that are directly opposite each other, but all of the rest are offset/alternating. Really incredible, and it demonstrates some of the math involved in the ways that living things develop their bodies; maybe these "early legs" could eventually evolve to be more symmetrical? Charnia, a very early lifeform, also has this glide symmetry coupled with fractal growth, as did many of the Ediacaran biota.
3:15 Hermaphrodite reproduction is not asexual. It can happen between two individuals with a double or single sexual exchange and, if that option is not available, it can happen with only one individual self-fertilizing, which is generally less desirable.
Asexual speciation in such a short time is interesting. They could have one common ancestor with a genetic mutation making it much more likely to survive and all the others of that brood dying off, as opposed to sexual evolution where the new genes are combined with older types. Either that or a simultaneous convergent evolution of all the members that swam through the canal.
0:58 😂 listening to you read that script saying “sea” and “slug” THAT many times I could hear you almost break and start laughing, how many takes did that involve?
I have loved watching nature programs since childhood so I am very rarely surprised by a (to me) new animal. This one I had never heard about. Interesting.
Me: "Ooooh, that's a neat looking critter..." My muse, hitting me with a stick: "STOP! DRAWING! MERMAIDS! BASED! ON! SEA SLUGS!" Thank you for another wonderful and informative video! They always brighten my day and they're the perfect length to watch in between tasks. I'm sure you have dozens of creatures you want to make AotWs on, but if you're ever looking for ideas I would love to see one based on Pelagothuria Natatrix. Stay safe!
What an alien-looking animal, like something from the Cambrian. I wondered if the “viridis” might refer to photosynthetic algae in its tissues giving it coloration, but my brief search indicated that though some other species in the genus do have them, this one does not. As you said, although it is a mollusk, it has lost its radula somewhere along the evolutionary line and converted to a “tentacled slimy hood of death” approach instead of boring scraping. More metal to be sure. Without that diagnostic radula and with its odd shape and without a larval stage to examine, If it had appeared in one of the Cambrian or Ordovician fossil sites preserving traces of soft-bodied tissues, I think it would have been unclassifiable.
I dunno about them only being in tropical waters because they are quite common here along the coast of British Columbia. Here we call them nudibranches. And they are also in waters deeper than 10 m.
Really weird and interesting creature. The head reminds me very much of a more solid creature I found on the beach once. It was greyish-purple and firm (completely opaque, as well), already deceased, looking in shape just like this creature's head (at least on the green-bodied form). Anyway, enjoyed your presentation very much - thank you!
@@mikeoxmall3847 Yes it's crazy. It was a glorious day the other day, sun was shining for a change, birds were singing and even the concrete 60's structures of the local shopping precinct looked full of life and yet there were loads of parents walking their kids to school that were more interested in staring at their phones to see what their friends were eating for tea the night before rather than share the moment with their kids. Many people take the world around us for granted.
Cool video, thanks. It should be pointed out that because they're hermaphrodites, that means sexual reproduction by definition (they form gametes with half the number of chromosomes). Asexual reproduction would be from fragmentation.
I really thought this was fake, just from the thumbnail, like some other channels that show "weird animals" that are just man-made dolls. A video of it actually moving would be even more convincing.
I'm curious as to whether or not they have any sort of nerve structure running down the middle of their bodies. In other words do they have a rudimentary spine? They look like they might.
A large number of sea slugs are poisonous, toxic, or use some other type of chemical defenses to compensate for the lack of shell. Does anyone know if these little fellas are an exception to that trend? Are their sticky protrusions their only defense?
I just felt an intense flashback to high school presentations : "These are sea slugs. They live in the sea, because they are sea dwelling slugs. But these sea dwelling sea slugs don't only live in the sea, but they also live in oceans."
Yep. That pretty much sums up this channel.
Drink a shot every time you hear the word "sea" or "slug" and you're dead after ten seconds.
Reminded my of my english essays
The missile knows where it is.
I almost wish zefrank said something like this in his video on nudibranchs
0:45 when you’re trying to fill in the word count for your essay
Lmao, so true
Take a drink every time he said sea.
underated lmao
Perfect!! 😂🤣
That whole section honestly sounds like a shitpost
"...so if you see one, please leave it alone."
NOT GONNA BE A PROBLEM BUDDY
LOL
An ocean is a bigger version of a sea.
That's deep.
😂
🙂😎 “YEAAAAAAHHH”
Searched this
I laughed out loud 😞
Lol
Great animal of the week! 🤩
Melibe viridis are pretty cool! For me, their most unique attribute is their method of feeding. They have lost their radular teeth and have developed the oral veil into a large veil or "fish net" which they use to constantly scan the substrate as they crawl along. When touching a small crab or crustacean the edge of the veil is rapidly contracted, trapping the prey, which is then ingested.
love your content!
@@Dionaea_floridensis Thanks a lot! 🤗
What's your fav video so far?
Are there any nudibranchs that aren't some sort of weirdly cute, alien looking, blobs of jelly?
It is indeed against the laws of a universe to have a nudibranch that isn't utterly fascinating in its alien beauty. It runs in their very being.
Perfect boneless lumps of squish, all of them.
Do they lay their eggs in a rose ribbon pattern like other nudies ?
@@Glory2Snowstar perfect blobs of thee most exquisite colors and patterns on such a teeny tiny canvas. Bucket wish...that I could have one of each, kept in a tank for a lifetime of joy.
Of course I would live in the ocean if I could.
How many times does he say sea
That’s what nudibranchs do. 😄
Drink (responsibly) each time the word "sea" is mentioned. Perhaps we will save Tuvalu!
Challenge acce........THUD(passes out).
What about species?
Have a slug every time he...
Just drink
Umm maybe every other time he says "sea" for Americans playing the game. Getting an ambulance is expensive here
Had a beer when I started this video and read this comment, it didn't last long
ben: "they also live in oceans"
me: "in what now?"
ben: "the bigger versions of seas"
me: "ah cool, the more you know I guess"
The discussion of where they live seems to have been a contest about how many times they could say "sea slug"
How many seas would a sea slug slug, if a sea slug could slug seas?
I 'sea' what they did there..
Guys, quit joking around...time to get searious....
I requested you seas desist
Sea is for sea slug, that's good enough for me...
"Oceans, the bigger form of seas"
Yes, there are 4 oceans but dozens of seas.
The Sea Slug sleeps on the sea shore?
On the sea floor by the sea shore
Sadly, Sally is selling them at the southern sea shore.
If something on the sea floor looks like an alien, a demon and/or a dog's chew toy, it's probably a nudibranch.
Ah, another episode of "Animals I'm glad don't live anywhere near me". Always enlightening, I love it.
Or: "Why I'm glad not to live in Australia"
"Sea dwelling slugs known as sea slugs" made me laugh out loud
This looks like a Precambrian creature
The overall geometry of this sea slug reminds me the geometry of the fossil hallucigenia.
Great video, as always.
Nice. Agreed! I never woulda thought someone else was thinking the same thing as me. It’s kinda great being in a community of nerds 🤓
This is my favorite biology based UA-cam channel. I Look forward to a new video every week!
when I was a kid, there was a "toy", a chemical product really, called 'Slime'. If that product were to get flushed out to sea & suddenly become animate, This is probably the form it would take.
0:50 “Where in the sea is this sea slug seen?”
0:48 oh? Does the seas slug sell seashells by the sea shore, because the sea slug slithers over the slimy sea floor?
I was looking for someone to do this comment for me!!🤣
Something I found super fascinating about this animal is the glide symmetry of its "leg" lobes. I've never seen anything like this in modern Bilaterians (although I'm sure there are loads of more subtle examples, like patterning). The first and last pair have lobes that are directly opposite each other, but all of the rest are offset/alternating.
Really incredible, and it demonstrates some of the math involved in the ways that living things develop their bodies; maybe these "early legs" could eventually evolve to be more symmetrical? Charnia, a very early lifeform, also has this glide symmetry coupled with fractal growth, as did many of the Ediacaran biota.
This takes the term:”Butt head” to a much greater level.
It has an uncanny resemblance to a cambrian lobopod.
Convergent evolution is dope
That is fascinating sea slug to learn about, great video Ben.
Ben always make the weridest animals feel normal and i love it
It’s head looks like something
@@ducklingwarrior No... You don't understand it.
@@ducklingwarrior I was thinking more the other direction
ua-cam.com/video/ARXqNc5DGXU/v-deo.html
The ear of a mantis?
2 balls
Why do I love these things so much? They're adorable to me for some reason!
3:15 Hermaphrodite reproduction is not asexual. It can happen between two individuals with a double or single sexual exchange and, if that option is not available, it can happen with only one individual self-fertilizing, which is generally less desirable.
It's kinda cute to be honest.
Yeah especially when you suck on its head
Asexual speciation in such a short time is interesting. They could have one common ancestor with a genetic mutation making it much more likely to survive and all the others of that brood dying off, as opposed to sexual evolution where the new genes are combined with older types. Either that or a simultaneous convergent evolution of all the members that swam through the canal.
0:58 😂 listening to you read that script saying “sea” and “slug” THAT many times I could hear you almost break and start laughing, how many takes did that involve?
That moment when you're trying to reach word count so you stress every opportunity to bring out "They are Sea Slugs where they live in the Seas."
So the Cuttlefish of Cthulu from Gwar does exist.
This thing looks like it calls Hallucigenia it's daddy...
Seeing this right after watching chapter 137 was wild
Was looking for this comment
As an American i appreciate the conversion of measurement. Thanks brah
I've seen images of this on Pinterest. However I never knew the species.
I don’t know why I assumed it was a type of siphonofore or jelly fish. I’m probably spelling that wrong.
i like how these animals of the week are actually special.
I have loved watching nature programs since childhood so I am very rarely surprised by a (to me) new animal. This one I had never heard about. Interesting.
When this thing attaches to your spine and you become the founder
Me: "Ooooh, that's a neat looking critter..."
My muse, hitting me with a stick: "STOP! DRAWING! MERMAIDS! BASED! ON! SEA SLUGS!"
Thank you for another wonderful and informative video! They always brighten my day and they're the perfect length to watch in between tasks. I'm sure you have dozens of creatures you want to make AotWs on, but if you're ever looking for ideas I would love to see one based on Pelagothuria Natatrix.
Stay safe!
Locals call it " Munching Facebutt",😂🤥
Damn, they got a mighty THICC head there
What an alien-looking animal, like something from the Cambrian. I wondered if the “viridis” might refer to photosynthetic algae in its tissues giving it coloration, but my brief search indicated that though some other species in the genus do have them, this one does not. As you said, although it is a mollusk, it has lost its radula somewhere along the evolutionary line and converted to a “tentacled slimy hood of death” approach instead of boring scraping. More metal to be sure. Without that diagnostic radula and with its odd shape and without a larval stage to examine, If it had appeared in one of the Cambrian or Ordovician fossil sites preserving traces of soft-bodied tissues, I think it would have been unclassifiable.
3:00 that little shrimp is gorgeous
I saw the thumbnail and title and seriously thought you were having me on. 😆😆😆
This reminds me of the creature in Attack on Titan the one that attached itself on to ymir
Having this beaut be the star of some seed planet specevo project would be sick
Loving these posts! Thank you👍
3:00 What is the little orange and white fella sitting on the sea slug?
It looks like a version of my dog's favorite kind of toy, but big enough to last longer than a week
Terrible challenge idea: Every time Ben says "Sea," take a shot.
What about 'see'?
@@GlitchedRed homophone. That counts too
That’s not Ben. It’s Thomas.
Do the sea slugs sell sea shells by the sea shore???.
Corona drinking game in front of your screen: Take a shot every time he says "sea".
Slug buggy.
If i did that I would die
She slugs
Sea slugs
Beneath the Javan Sea
I dunno about them only being in tropical waters because they are quite common here along the coast of British Columbia. Here we call them nudibranches. And they are also in waters deeper than 10 m.
Really weird and interesting creature. The head reminds me very much of a more solid creature I found on the beach once. It was greyish-purple and firm (completely opaque, as well), already deceased, looking in shape just like this creature's head (at least on the green-bodied form).
Anyway, enjoyed your presentation very much - thank you!
@Hua Cheng No, it was actually quite firm in shape, and had a rough surface. But the look was remarkably similar to this creature's head.
You pick the most amazing animals. Great work.
So much wonderful life on this planet and yet so many people are only interested in themselves.
Yup!! They'd rather look at Instagram than our beautiful world!!
@@mikeoxmall3847 Yes it's crazy. It was a glorious day the other day, sun was shining for a change, birds were singing and even the concrete 60's structures of the local shopping precinct looked full of life and yet there were loads of parents walking their kids to school that were more interested in staring at their phones to see what their friends were eating for tea the night before rather than share the moment with their kids.
Many people take the world around us for granted.
Chapter 137 spoiler looking good so far
Lol...Reiner fighting life.
"but I assure you it's from earth" good, I was convinced a soldier brought one back from space, but you've assured me otherwise.
Thus is so fascinating. Nature is an Artist.
Wait wait WAIT... where do they live?
Cool video, thanks. It should be pointed out that because they're hermaphrodites, that means sexual reproduction by definition (they form gametes with half the number of chromosomes). Asexual reproduction would be from fragmentation.
New drinking game: Take a drink every time he says "sea"
Slug your buddy every time he says "slug".
here before attack on titan explosion (also you're definitely a mange reader you, the timing is too perfect !)
the more I learn about sea slugs, the more I like them
I had no idea these things existed. They look cute until you mentioned how they eat. Bad way to go!
That was interesting ill subscribe good video mate
2:57 - What kind of shrimp is that?
Looks like the parasite from Attack on Titan
This looks like the brain and spine with some ribs
The "sea shore sea dwellers known as sea slugs" part (or whatever you said) cracked me up lol.
0:50 - 1:15 pure gold
This thing looks like Anomalo Karis and Hallucigenia got together to make a baby. lol
I really thought this was fake, just from the thumbnail, like some other channels that show "weird animals" that are just man-made dolls. A video of it actually moving would be even more convincing.
Thank you for the note of explaining why we should leave this alone when/if we see one ♥
The Burgess Shale called. It wants its organism back.
I'm curious as to whether or not they have any sort of nerve structure running down the middle of their bodies. In other words do they have a rudimentary spine? They look like they might.
The sea slug knows where it is because it knows it isn't on land
It kinda looks like a fuzzy, starving moss piglet
New chalenge: take a shoot every time he says sea
They remind me of those gooey things that you can throw at the wall and it rols down.
“Ah, yes, time for a meal.”
O
|<
^ >--~~~ “Schluuuuuurp”
Cant eat my my nutrients? Good lets keep it that way nature.
Take a drink every time he says "sea"
this was a interesting video. I didn't know this sea creature existed.
Nudibranchs get my vote for one of the top five weirdest creatures right along with siphonophores and certain types of insects/arachnids.
What cool creatures! Nature is truly fascinating.
Thank you for teaching me about an animal I didn't know about.
Narrator: nudibranchs
Closed captions: noodle bronx
Super interesting channel indeed!
👍☺
octopus - highly developed 8 sided slug
0:45 Never thought I'd hear the word "sea" that many times in a single video
Doug, you sound positively chipper today!
So these creatures were dispersed before the continents broke apart completely. Very interesting creatures as a breed.
A large number of sea slugs are poisonous, toxic, or use some other type of chemical defenses to compensate for the lack of shell. Does anyone know if these little fellas are an exception to that trend? Are their sticky protrusions their only defense?
Drinking game: take a shot every time he says ‘sea’ and ‘slug’
One shot for every "sea" and "slug"
Watching this episode high made me feel like being a sea slug. A sea dwelling slug in the bigger version of the sea.