How are whales adapted for living in oceans that are very cold?

Answer: C. They have a thick layer of fat under their skin.

Whales have a thick layer of fat under their skin called blubber.
This blubber acts like a thermal blanket to trap body heat inside.
It is their main adaptation for staying warm in freezing ocean water.
While strong tails help them swim, only the fat protects them from the cold.

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