The Biology of Porpoises

Despite looking like dolphins, porpoises are in their own family, although they are still closely related. They include the smallest and rarest of all cetaceans - the Vaquita - a critically endangered species with only an estimated 10 individuals left. Porpoises tend to be shyer than dolphins, and less acrobatic. As a result, many of the porpoise species are poorly known, and are typically only seen when stranded on beaches or caught in fishing nets.
All pictures attributed to Animal Analytics were taken by me personally. A full description of all others can be found in the following document, along with notable scientific papers I used when researching this topic.
Attributions and Research Papers:
www.dropbox.com/scl/fi/g5xgu0...
Timecodes:
00:00 Intro
00:41 Cetacea
02:56 Toothed Whales, Odontoceti
05:10 Porpoises, Phocoenidae
09:20 Indo-Pacific Finless Porpoise, Neophocaena phocaenoides
11:09 East Asian Finless Porpoise, Neophocaena sunameri
11:51 Threats: Pollution
12:49 Difficulties in Researching Finless Porpoises
13:35 Yangtze Finless Porpoise, Neophocaena asiaorientalis
16:15 Harbour Porpoise, Phocoena phocoena
18:45 Dall’s Porpoise, Phocoenoides dalli
20:53 Vaquita, Phocoena sinus
22:32 Threats: Gillnets
23:47 Vaquita, Part 2
25:48 Spectacled Porpoise, Phocoena dioptrica
27:24 Burmeister’s Porpoise, Phocoena spinipinnis
28:53 Outro
Thank you for watching, and let me know what animals you would like to see me talk about next.

[@yasodam5479]

When I was growing up there was a few years where increasing numbers of dead porpoises washing up with odd round brushes and internal haemorrhages. For quite a while the theory that blew up in the news was that there was some crazed animal abuser going out on their boat and bludgeoning the porpoises with a baseball bat (limited logic but 🤷‍♀️)
Eventually bottle noses were confirmed as the culprits.
The other theory for this alongside the ones you mentioned is unfortunately sexual frustration. Small gangs of younger males have been known to gang r female dolphins along with porpoises and some other animals.
All this was followed a while later with a series of documentaries focusing on the more violent side of animals and bottle noses were featured alongside hippos and elephants.
Nice vid 👌

[@animalanalytics]

Interesting - the animal kingdom can be brutal!

[@chasechristophermurraydola9314]

Can you do videos on the clade Agreodontia and the clade Agreodontia is a clade of marsupials and it includes 3 orders which are Notoryctidae aka the marsupial moles and extinct relatives, Dasyuromorphia aka Australian Carnivorous marsupial’s like the Quolls, Dunnarts, The numbat, Tasmanian Devil and the Supposedly extinct Thylacine aka the Tasmanian tiger, the last order in Agreodontia is Peramelemorphia which includes the Bandicoots, New Guinean long-nosed bandicoots and the bilbies.

[@animalanalytics]

That group includes some of my favourite animals of all time! The Numbat is one Australian animal that is often overlooked, but are really interesting. Thylacines are definitely amazing animals, too - and whether not they are extinct, I believe there is currently work on genetics to bring them back that would be interesting to look into.