Question

Whales and dolphins release a fountain of water while moving upwards. Wh do hey do so?

Answer 1

Whales and dolphins breathe air through their lungs like other mammals and therefore they have to come to the surface of water regularly. The nostrils of whales and dolphins are located at the top of their heads and are called 'blowholes'. They come to the surface or jump into the air regularly to inhale and exhale air through these blowholes.