they blow out water
whales can be found in cold and warm water
Blue whales CAN live in warm water, but they prefer cold water because most of there pray lives there
salt water!?
To protect themselves from the cold.
They protect themselves by their thick, moist skin.
Whales and dolphins are warm blooded mammals, produce body heat, and have a thick layer of blubber (fat). Sharks are cold blooded fish.
both
they live in cold water.
blubber
They've got literally tons of blubber that insulates them from the cold.
They produce lots of blubber to protect themselves from the cold and the extreme pressure at lower depths. Jellyfish drift, whales swim. This is partially true but the main reason whales have a lot of blubber is a question of buoyancy. Fat is much less dense than muscle and bone and without it the whales would sink very fast.
To keep them warm as water can be extremely cold.