All of the animals below breathe using gills. True or false?
False
The first picture is of a fish which uses gills to breathe. The third picture is a tadpole (baby frog) which also uses gills to breathe. However, the gills disappear after the tadpole grows into a frog.
The dolphin is a mammal like us, humans. It uses lungs to breathe and hence cannot breathe underwater. The dolphin needs to surface every time to breathe.