How do sperm whales sleep?

Answer 1

They rest on the surface and doze, while only half of their brain sleeps (they only close one eye). The other half must focus on breathing, and safety. (This is true in all whales and dolphins.)

Answer 2

a sperm whale moves by moving his tail up and down and his fins and that's how a sperm whale moves.

Answer 3

Whales, like otters, porpoises, and all other swimming mammals, undulate their spines rhythmically, waving their tails and flipping the flukes at the end, propelling them forward.

Answer 4

main method of movement for all the whales is by moving their fluke - their tail fin - up and down.

Answer 5

by swimming