A dolphin is a marine animal that is part of the whale family., Dolphins have smooth, rubbery skin and are usually a mixture of black, white and grey in colour., They have two fins on their sides, a triangular fin on their back, and a tail., A dolphin’s tail is horizontal unlike fish., Like other whales, they have an insulating layer of fat under the skin called blubber. , Dolphins live in the world’s seas, oceans and rivers., They like to be with other dolphins, living together in groups called pods., The dolphins communicate through clicks and whistles as they dive below the water., They swim under lantern fish to drive them to the surface for the pod and other fish to feed on.,

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