Why don't penguins' feet freeze? | Surprising Science

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Natural History Museum

Natural History Museum

Күн бұрын

Пікірлер: 66
@lesterstanden2435
@lesterstanden2435 7 күн бұрын
It's a poor diagram showing the heat exchange effect because it shows the heat increasing before reaching the vessels that are warming the blood, and the cooling taking place after after leaving the vessels that are cooling it.
@Godvivec
@Godvivec 2 күн бұрын
It's a diagram that shows exactly how it works. Cold vessels quickly heat as they move towards the warm blood vessels (away from the cold extremities), and quickly cool as they move towards the cold blood vessels/extremities. It's only a "poor diagram" for people who lack basic thinking skills. This is exactly how heat exchange works. I'll simplify it for people who agree with this comment: Cold gets hot when near hot, hot gets cold when near hot - Heat exchange for complete morons
@lesterstanden2435
@lesterstanden2435 2 күн бұрын
@@Godvivec Heat exchange takes place as it transfers from the source to the sink, not before. I am an engineer engaged in the design and manufacture of a wide range of heat exchangers for industry. Your comment about morons is rude and derogatory.
@turkeybowlwinkle4440
@turkeybowlwinkle4440 Күн бұрын
Thanks. I found it confusing, now I know why
@theastuteangler
@theastuteangler 20 сағат бұрын
no, you are misunderstanding what is happening. warm blood from body goes to feet. blood looses heat to the environment as it passes through feet. cold blood exits feet, and now the heat exchange takes place. the returning vein is wrapped around the supply artery and the return blood is warmed faster or more efficiently.
@Diegoshadow85
@Diegoshadow85 9 сағат бұрын
@@theastuteangler But then the blood that goes into feet is colder isn't it?
@Camphreneas
@Camphreneas 6 сағат бұрын
Huh…I always assumed that their feet is covered in layers upon LAYERS of thick skin that acts like a pair of winter boots to keep them warm, but I never thought about the logistics of what goes on internally that’s mainly what keeps their feet warm! It’s like the coolant system in refrigerators!
@3nertia
@3nertia 10 сағат бұрын
Fun Fact: Arctic Foxes also have a similar adaptation!
@tcreate.s
@tcreate.s 20 сағат бұрын
Penguins have Happy Feet-and some seriously clever ways to keep them toasty!
@Mattias_the_unimpressive
@Mattias_the_unimpressive 5 күн бұрын
My question is: wouldn't ir be better to cover the feet with feathers too?
@Skukkix23
@Skukkix23 2 күн бұрын
feathers only work with air pockets. Feathers would on one hand simple not work, becuse everytime you step on them you would eliminate the air pockets on the other hand, you would push water into them, making them do the exact opposite of what you wanted them to do. Also the mechanical stress is probably the biggest reason in the first place. Friction would not allow them to grow there and stay long enough, probably the reason why no bird has feathers on the bottom side of it's feet. Feathers on top would help not much, since it's the large surface contact of the foot which is responsible for the big chunk of the heat loss.
@JanetStarChild
@JanetStarChild Күн бұрын
Pretty much what the ptarmigan has. Their feet are covered with downy feathers; just leaving the pads bare, like a dog's paw.
@GoGetFree
@GoGetFree Күн бұрын
Great question and great comments here. Pretty cool.
@realdragon
@realdragon 11 сағат бұрын
That's a question I've never thought of
@steven7297
@steven7297 Сағат бұрын
Different nerves , more advanced for colder temps , easy no video or explanation needed
@triglynx
@triglynx 15 сағат бұрын
Subhanallah, nothing is created without purpose & function.
@hashbrown777
@hashbrown777 Күн бұрын
This is more an explanation of why cold blood doesnt cause issues coming back into the body for recirculation, it doesnt show any specific adaptation for keeping feet from freezing that other animals just have as regular bloodflow than would develop frostbite
@simonantonehie6392
@simonantonehie6392 5 күн бұрын
Oh my gosh! This video title just sparked a memory of my favourite book as a kid. It was also called 'Why don't penguin's feet freeze' and it was full of fun facts. I remember there was a flip book animation of a penguin fishing with a fishing rod in the bottom corner.
@NaturalHistoryMuseum
@NaturalHistoryMuseum 5 күн бұрын
We have a similar book! 📚 👉 www.nhmshop.co.uk/can-jellyfish-live-forever.html
@kirkwilson5905
@kirkwilson5905 7 сағат бұрын
It's available on amazon....
@geroldbendix1651
@geroldbendix1651 Күн бұрын
Once again science solved one of the most pressing issues of humanity. I'm deeply impressed ❤😅
@raycenteno7698
@raycenteno7698 Сағат бұрын
Thats a good question. Never tried it during the cold. However, I can last for hours on the hot cement road during summer time in Florida.
@Necro_fury
@Necro_fury 6 күн бұрын
Thought it would be more than just: blood. So what differs between them and humans? just high amount of bloodflow or?
@marlinbundo2409
@marlinbundo2409 6 күн бұрын
I think the key thing is that they are designed to purposefully maintain a region of blood in their feet that is just barely above freezing. An isolated circuit that primarily interacts with the warmer blood of the upper body by indirect heat exchange. In human bodies, the only option is to directly send warm blood to the feet which rapidly loses our vital body heat, or to cut our losses and restrict blood flow to the area, causing the feet to freeze and die but preserving more vital tissues. Penguins have evolved a third option
@Necro_fury
@Necro_fury 6 күн бұрын
@marlinbundo2409 ah ok, was confused by it and was assuming things as well. Thank you
@b.a.erlebacher1139
@b.a.erlebacher1139 4 күн бұрын
Cold climate mammals have very similar systems to keep their lower legs, ears and tails from freezing. Humans with thousands of generations in cold climates tend to have a stocky build and be better at preserving heat than humans who've had thousands of generation of hot climates and tend to be lanky with more surface area to volume ratio. AFAIK, no humans are as well adapted to extreme climates as many other mammals that are more specialized to extreme climates.
@aroundandround
@aroundandround Күн бұрын
So the answer is nothing really that different from what any animal body does.
@nataliakhomenko5325
@nataliakhomenko5325 8 күн бұрын
A generic comment made to count toward Channel participation by the algorithm
@buster5661
@buster5661 Күн бұрын
Well the algorithm boosted so I would see it and I don't know if I would say I appreciate it
@leongliyang6946
@leongliyang6946 23 сағат бұрын
In between their feet , there is eggs ,with cold feets the chicks will hatch ... Interesting
@MabusTiefsee
@MabusTiefsee 5 күн бұрын
Does that mean all dinosaurs had that as well?
@salemunderfire
@salemunderfire 2 күн бұрын
not necessarily
@nathanskywalker1536
@nathanskywalker1536 2 күн бұрын
😣
@funkyshade
@funkyshade 15 сағат бұрын
Fake. Penguins take regular warm foot baths to keep their feet warm
@sodaspop
@sodaspop 18 сағат бұрын
They "evolved to maintain a constant temperature." What? That means that before they 'evolved,' they couldn't keep their feet from freezing and would have died from frostbite and gone extinct. Give credit where it's due, to the Creator (and designer) of life.
@Layput
@Layput 4 сағат бұрын
Stop smiling when you talk.
@anthonymorris5084
@anthonymorris5084 Күн бұрын
Because they wear sox to bed.
@majorlaff8682
@majorlaff8682 Күн бұрын
0:21 - What happened to their feet before 'they evolved to keep their feet warm'?
@metoo6599
@metoo6599 Күн бұрын
The science says that penquins evolved from flying birds into the now flightless birds. So I guess they adapted slowly over time to the cold on the ground for longer and longer periods of time??
@majorlaff8682
@majorlaff8682 Күн бұрын
@@metoo6599 ' So I guess ...'. Thank you for your honesty. It's all guesswork.
@stephenlawrence554
@stephenlawrence554 17 сағат бұрын
The ancestors of penguins lived in the area of New Zealand and Antarctica back in the Cretaceous. Back then, Antarctica was connected to Australia and South America, and the climate was that of a rainforest. Eventually, Australia split off, with Antarctica finally being separated from South America around 30 million years ago, becoming fully isolated. During the neogene period (beginning 23 million years ago), the Antarctic ecosystem transitioned from a rainforest into a tundra, and eventually became too cold to even support that. So to answer your question, rather than the ancestors of penguins just arriving in the frozen Antarctic as we know it and just having to deal with the cold, they probably slowly adapted as the land they lived in became colder over millions of years
@majorlaff8682
@majorlaff8682 17 сағат бұрын
@@stephenlawrence554 Nice story. Thank you, Stephen.Your first-hand, eye-witness account is fascinating.
@stephenlawrence554
@stephenlawrence554 17 сағат бұрын
@ not quite eye witness, more like leading theory
@buster5661
@buster5661 Күн бұрын
I didn't understand this at all
@majorlaff8682
@majorlaff8682 Күн бұрын
He's an evolutionist. Whenever there's a problem, just add a few million years.
@buster5661
@buster5661 Күн бұрын
@@majorlaff8682 i was talking about the physics but yeah that too i guess
@metoo6599
@metoo6599 Күн бұрын
Lets just outfit all pequins with little warm booties!! 😍
@James-hs3tu
@James-hs3tu 5 сағат бұрын
Interesting
@origprod2
@origprod2 7 күн бұрын
I respect the algorithm, but I respect the Natural History Museum more. #viewerengagement
@NaturalHistoryMuseum
@NaturalHistoryMuseum 6 күн бұрын
We and the algorithm appreciate the support! 🐧
@nathanskywalker1536
@nathanskywalker1536 2 күн бұрын
That is interesting
@saqlainalvi5485
@saqlainalvi5485 6 күн бұрын
Engineering at its finest
@athanasioskatsikas6942
@athanasioskatsikas6942 8 күн бұрын
Για τον αλγόριθμο.
@SalvableRuin
@SalvableRuin 6 күн бұрын
"Penguins evolved was the first lie. Penguins were created. Stop marvelling at creation while denying its Creator. "...they exchanged the truth about God for a lie and worshiped and served the creature rather than the Creator, who is blessed forever! Amen." Romans 1:25
@VienQuitonm
@VienQuitonm 6 күн бұрын
What?
@shlingusdingus4174
@shlingusdingus4174 5 күн бұрын
If you really want to play that game, the concept of a God is more of a theory than Evolution is. The only difference is Evolution is a well known, and heavily supported theory. I would love to see even a shred of evidence of his existence when even his son, who died for our sins, left no traces.
@Eidlones
@Eidlones 3 күн бұрын
"Penguins evolved was the first lie." is a hilarious statement when said with sincerity. Thank you for making me laugh.
@anthonymorris5084
@anthonymorris5084 Күн бұрын
Man created God in his own image.
@elliot_rat
@elliot_rat Күн бұрын
bro going full schizo
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