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Not quite warm blooded: > It is known for its ability to maintain stomach temperature (homeothermy), which is unusual among fish. This shark has not been demon
by conradev 3y ago
Not quite warm blooded:
> It is known for its ability to maintain stomach temperature (homeothermy), which is unusual among fish. This shark has not been demonstrated to maintain a constant body temperature.
https://en.wikipedia.org/wiki/Salmon_shark https://en.wikipedia.org/wiki/Salmon_shark
But there is indeed a vascular heat exchanger involved:
https://en.wikipedia.org/wiki/Rete_mirabile https://en.wikipedia.org/wiki/Rete_mirabile
- dendrite9 3y agoI have wondered about bird ability to keep their feet in cold water, but not enough to look up how they've adapted. Thanks for that second link.
- wil421 3y agoYea I could link to two different sources who say endothermic, one of which is a university. The others are articles with spelling and grammar mistakes and that’s why I didn’t link a source. The shark can raise its body temperature 14-20 degrees more than the environment. I think it fits the definition of warm blooded. https://en.m.wikipedia.org/wiki/Warm-blooded https://en.m.wikipedia.org/wiki/Warm-blooded
- samstave 3y agoWim Hof would like a word. I used to be able to do homethermy by thought when I was younger... but I have lost the ability. (SERIOUS); I used to be able to direct heat to various extremities by thought when I was laying in bed in really cold environs... but I seem to have lost that ability.