Nature & Environment
Studying mammals: Return to the water
...adult seal and develops a thick layer of blubber. Question 1 Can you think of a likely explanation for this change? Answer As DA points out, blubber provides better insulation in the water (and the smoother coat of the adult improves its streamlining). A fur coat traps a layer of warm air next to the body and is a fairly good insulator in air and water, but it has its...