they hunt for predators and eat anything that looks good
They couldn't survive out of water.
Whales and dolphins can't communicate under water
becoz there not in water. they need water to survive
swim.
Under it
Whales survive by eating krill.
A thick layer of blubber
Without water for support, their bulk puts pressure on their internal organs.
Whales and Dolphins are born under water and aren't fish.
That is true. Whales and dolphins do not have gills, yet they survive in the ocean. They do this by coming up for air about every five minutes, take a deep breath, and hold it while they are under.
so they can brethe and they were meant to be under water animals
Fish use gills, which extracts oxygen from the water. Amphibians and whales breath oxygen, whales can hold their breath for hours at a time, explaining how sperm whales can hunt at great depths for periods of time.