How Ocean Currents Turned Whales into the Largest Animals that have Existed
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- เผยแพร่เมื่อ 22 ก.ย. 2024
- Ocean currents are a fundamental part of how oceanic ecosystems function differently to land ones and understanding them is important to understand so may different marine animals that live throughout the ocean. This video explains some research that may have proven that a small change in ocean currents has completely changed large marine mammals.
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I'd never heard of animal that goes back to a juvenile form during times of scarcity. The world is such a fascinating and complex place
Me after college
I know it's not exactly the same, but consider how humans react to starvation. Women's menstrual cycles go on hold, fat reserves in breasts and thighs are consumed. In men sex drive stops and semen production drops. In extreme cases you can hardly tell the difference between a man and a woman on the verge of starvation except by carefully looking at the bone structure.
I'm not sure how much you could study this without running into some nasty ethical problems, but it makes sense that if you barely have the calories to survive, your offspring won't be doing much better.
Axolotls do this too
My wife says I revert to my juvenile form whenever I make a joke, which cccurs often!
@@tipwilkin, Eels don't develop sex organs until they near their final end. They live gender-less in freshwater rivers and streams for decades (a lifespan of up to 90 years); but one day they leave for the ocean, developing reproductive organs while traveling at sea and simultaneously absorbing their own stomach and intestines as they swim towards an unknown destination to breed and die. The baby Eels make their way to freshwater streams and rivers, and the cycle begins again.
Kind of miss the previous opening sequence, and specifically the "Splash" sound effect. Made it very familiar and iconic IMO.
I agree - miss the splash also
Me too, it's really jarring in a way to watch a mothlight video without the splash! I understand that channels evolve their intros and outtros, but being with someone from the beginning means you get to experience the changes
We all love the splash! Has a deeply calming effect and just got my mind ready for a mothlight video.
Yes - the "plooop." 😀
I miss it; the old sploosh and chirp.
Hearing you say some fish can travel more distance after death than they ever did in their life made me chortle. I like that
:nerd:
Chortle... That is a new word for me. I don't think I've ever seen or heard that. Thanks for the new word!
At this stage I can only fall asleep to the sound of moth light vids. No hate, the videos are super interesting I usually watch em once for the info, but then that mellow voice and ambient sound is super calming. Best thing to fall asleep to hands down.
I'm similar, they're one of the channels I watch to fall asleep
Useful to know at 2.30 am when I often lay awake for 3 hours
same
If you like space as much as animals, I recommend adding Astrum to the list
no way mothlightmedia drop
Only channel I have notifications for
😮😮
Its a special day
get hyped
WOOOOO!
Another moth light media classic
indeed
I just recently asked myself why bluewales are the biggest animal to ever exist and how/why this came about so recently. Thank you for this detailed explanation
The biggest animal THAT WE CURRENTLY KNOW OF to ever exist...
That is a fascinating question in and of itself. Do you think that there is some sort of 'silurian hypothesis' for animals as well?
A few years ago they found partial fossils of an ichthyosaur that in life might have been able to contend to be the biggest animal ever.
Love the video, but man do I miss the iconic intro sequence splash and background music 😭
there was one video where he switched the background music completely, but he then reverted to the old stuff, thankfully.
Same
Always a good day when Moth Light Media releases a video 🥰
5:11 The beluga whale and the seal looking like two buddies having fun together. A Disney movie waiting to happen
Before the orca shows up
Unfortunately Disney only makes sequels now
@@luanasari5161
That's half the plot right there!
One of my favorite TH-camrs talking about one of my favorite subjects
Moth Light Media!😍
I've always heard about Krill, and I know there's a lot of weird things in Nature, but the fact that Krill can just de-age and become juveniles just to save on food... Taht's probably one of the wildest things I've ever heard, I almost choked in surprise XD
Thank you for explaining why arctic waters can have higher nutrient potential than equatorial waters; and emphasizing the need to sustain the conveyor belt engine of ocean life
Love the map projection used, really see the connectedness of the oceans❤
An excellent and very informative video. Thank you.
This one was one of your best episodes so far. Not only a look into whale biology but also a very interesting explanation of how oceanic currents work. Thank you!
i’d love for you to cover freshwater aquatic ecosystems too
Thank you for everything.
My favourite palaeontology channel.
Lmao was not expecting a dead bat with bugs on it 10 sec in. Always glad when he uploads a new video
The most complicated class I ever took was graduate level chemical oceanography. Your discussion of the conveyer belt reminded me of how much is going on in the seas. Salinity of the water causes density changes that affect layers and currents as well. Super interesting stuff.
A new mothlight video! The perfect birthday present!
You're back !
This is a wonderful channel! Always looking forward to new videos! ❤
Whales are the best. Would love to see a video on orcas next
Top shelf content.. cheers
Loved this one 👍
Your videos are always great, but this one is epic! Thanks for piecing together all these facts that I knew but didn't understand how they were related.
I am trying to kick my addiction to reels and other short vertical format videos and your channel is my goto when I start to lapse. I love your content. I am glad you made a new video
If looks could krill, I would shrimply die.
Dont be shellfish
new moth light media I have a reason to live today
2:52 the great big beautiful ice wall protects our marine life and currents
But it's reversed right? Heresy!
i swear i'm going to present this to a flat earther asking what if
@@Eye_Exist lol
so what you're saying is krill is the real chicken of the sea
One thing I would love a video on is the details of how evolutionary family trees are determined. For instance, the mysticeti and odontoceti whales took over from the basilosaurids about thirty million years ago, but was their common ancestor/s itself a basilosaurid? Would it have been considered a solitary occupant of its own order? How complete of a picture are paleontologists able to create of the direct ancestries within the animal kingdom? Also, how many animals have direct ancestors who were bigger than them?
In case you should know, both baleen whales (suborder Mysticeti) and toothed whales (suborder Odontoceti) are split into two major groups, with the baleen whales being split into the infraorders Balaenicephalia and Balaenopterocephalia, the Balaenicephalia infraorder is split into the superfamilies Cetotherioidea for the monotypic families Eschrichtiidae and Cetotheriidae and Balaenoidea for the monotypic families Balaenidae and Eubalaenidae, while the rorquals (family Balaenopteridae) are the only extant family of both the superfamily Balaenopteroidea and the infraorder Balaenopterocephalia and the toothed whales being further split into the infraorders Physeterimorpha and Delphinomorpha, the Physeterimorpha infraorder is split into the superfamilies Ziphioidea for only the family Ziphiidae and Physeteroidea for the families Kogiidae and Physeteridae, while the Delphinomorpha infraorder is split into the superfamilies Delphinoidea for the families Orcinidae, Monodontidae, Phocoenidae, and Delphinidae and Platanistoidea for the families Iniidae and Platanistidae.
I am no specialist, so I don't know exactly, from what I understood:
A lot of the phylogeny of current animals is based on genetics. So, for extinct animals, it's a lot harder to work, we of course have morphology that is still a good indicator (even for the weirdest groups indicated by genetics, we can find morphological clues, it's just not the most visibles ^^), but it's harder and we can't check if we made a mistake ^^'
Paleontologists tend to avoid placing the common ancestor of creatures in a specific group. The common ancestor should not be understood as a real creature that existed precisely 30 MY ago, it's more like a virtual construct, created by scientists to help their understanding of the world.
ANd finally, a lot of answers in paleontology, if we want to be accurate and not make too much speculations is: we don't know, and we will probably never know. It's the most frustrating part of paleontology (that and the fact that 99% of the extinct species probably never left any fossiles XD)
TLDR: We don't know and will probably never know, because it happened too far in the past ^^
Clint's reptiles has some good videos along those lines
No way! This is by far your best video so far IMO. Hope you do more of this ecology stuff because this was really as good as an university lecture.
Nice
Krill are one of the most fascinating animals, they're more than generic marine animal chow
My county has coastal upwelling! It’s great for the whales
Please make more video I love you mothlightmedia yo are my favorite documentary channel
Sorry babe can't come over rn new mothlight just dropped
2:50 Okay, this map is so unusual, at first I thought you were showing us the map of another world XD
i got so excited seeing this notification :DDDD
Extra whale lore, my favorite!
what an excellent channel👍
Im krillmaxxing on a saturday!!!
2:45 a grim vision of the future where we accidentally flip the world inside-out
your videos keep me going
I love love love your videos but I miss the intro.
Woo! New Mothlight video!
I love your videos so much I can’t put it into words. Thank you for allowing us to soak up all this information
Thank you for making this video. Fascinating topic and excellent presentation.
I always wonder if similar deep sea current loops would have appeared at other times in earth's history (not necessarily at Antarctica). Probably would need very complex and computing intensive models though, but it is interesting to imagine that some time in the future we can know where ancient nutrient rich areas were
I woukd think different epochs would have different circulation patterns especially when there were supercontinents and perhaps no ice at the poles.
Babe wake up, new moth light media just posted
There’s no actual way i just spent yesterday night asking chatgpt about the whole process of evolution of krill and whales and mans just dropping this
Lol creepy
You're going to get nothing but garbage from AI. It is spell auto-incorrect writ large.
there goes my night!
Thank you for explaining why arctic waters can have higher nutrient potential than equatorial waters;
9:20 I wonder if larger non-avian dinosaurs had the same factor in why they became so massive. Not the direct cause of why they're huge but a contributing part.
Could you do a video on the evolution of blood
I don't know if I've ever subscribed to a channel after only one video before this one. It's like your content was generated by a super clever A.I. that's tailored to my exact tastes in youtube content.
Always find your videos the most interesting on TH-cam mate. Thank you. I liked the point about the crab eating seals. Maybe it's a look into how the whales started to evolve to be so specialised, when you see how the seals teeth are formed.
2:44 maps like this hurt my brain!
Fun fact taht's probably one of the cause of the disappearance of Megalodon. Megalodon survived for 20 millions of years, by hunting and eatingthe large diversity of small to medium whales that existed at the time. When most of these whales existed, and the rare whales remaining migrated to the poles for a large part of the year (where Megalodon probably could not go, as he was probably not able to maintain his temperature in cold water), he disappeared.
Of course, there's other factors, the change in the currents also meant that his habitat was perturbated, as he was a coastal warm waters predator, and the appearance of new predators, better suited for the colder, less rich waters, also drive him to extinction. But the disappearance of his main food source is still a major problem ^^
That was fascinating.
I am one in a krillion
Crab eater seals do eat crabs. Krill are a kind of lobster, and lobsters and crabs are many legged arthropods.
Cool
Babe, a new Moth Light Media video dropped!
Very cool!
the old thumbnail and title this had was kooler
I notice you say "It is thought" a lot. Interesting.
Great video
very interesting
2:20 Water is at its densest at around 4 degrees. At those temperatures, even if there is mixing, it'll probably won't be currents driven.
I hope you could do a video on the enantiornithine birds I’m curious to know how these opposite birds diversify and how they were first described.
Another proof how Australia and Antarctica are continental siblings: everyone in Antarctica also loves shrimps on the barbie
About time. I thought you quit or were ill.
❤❤❤❤
So the big blues, current heavyweight champ probably the all time record holder along with whale sharks etc are actually direct results of thermostats setting changes for bathtub of big guy in the clouds? Good to know. At least, there's something significant record holding creatures exit in our present time compared to the past and when it comes to "--est", it always got to have one handy nearby as usual for some talking points.
The map at 2:44 has my head in a whirl😅
This Krill's got style, so listen up dudes
They can shrink in size, when there's no food
Im One in a Krillion
thanks
Let me guess, current pattern changed a lot with closing Panama isthmus, and that changed krill distribution?
i still miss the splash at the start of the videos :(
8:49 Is it just me or does that turtle look really annoyed with the whales? There's a back story to that picture. Definitely some bad blood there.
Krill Openheimer seeing whales
The people miss the splash 😢
I miss it the old sploosh and chirp in the opening.
No splash intro...
...end of an era?
In my experience, teenagers eat way more food and are more active than adults, so it’s a bit weird that krill revert to an adolescent state to conserve energy.
I wonder if CrabEater seals will in time evolve into baleen seals
Ancient proto-whale, looking like nearly any other hairy mammal, standing on its 4 legs upon the land starring into the sea watching a krill bloom form: God i wish i had SO MANY of things in my mouth at once...perhaps one day if i want it badly enough, which I DO....
Bring back the splash!
mothlight media on nebula when?
Before the whales: how the most efficient breathing system, continuous growth and 1000+ ppm of CO² in the air has created the largest land animals ever.
Love it
Brriliant ❤❤
meanwhile your videos are generally best in the genre, you are also a true master of finding the most obscure scale and chart images. 3:13 i've literally never seen this distorted illusion of the earth lmao. 4:47 another of these absolutely unrelated scale images - just what has 7,5 cm to do with anything? it's not a round/milestone number and it's way bigger than either of the animals in comparison. why on earth would you ever compare these two animals to a 7,5cm scale? xD why not 5cm or even 10cm? it's so nonsensical and it's on every video i'm almost betting you're doing this for a joke.
And here I thought mobile games were to blame