A dolphin 's nose is on top of its head so the dolphin can easily breathe on the surface of the water .
Organizations such as the Mote Marine Laboratory rescue and rehabilitate sick , wounded , stranded or orphaned dolphins , while others , such as the Whale and Dolphin Conservation Society and Hong Kong Dolphin Conservation Society , work on dolphin conservation and welfare . India has declared the Dolphin as their national aquatic animal in an attempt to protect the endangered Ganges River Dolphin .