Eli5: How are humpback whales able to survive in both tropical temperatures and antarctic ones (when my fat can’t protect from either)?

Question

Eli5: How are humpback whales able to survive in both tropical temperatures and antarctic ones (when my fat can’t protect from either)?

In: 58

Answer 1

The most important reason is that whales have a lot more (and better) insulation than even the fattest human. It’s kind of like how the body of a car will not stop assault rifle bullets, but tank armor is practically impervious to them.