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

How do whales regulate body temperature between chilling arctic climates, and warm tropic climates?

My only guess is that the ocean waters in the tropics are still relatively cool compared to the outside air, and whales probably dive to deeper depths to cool off.