Dolphins are mammals, they live in the ocean all over the world. Dolphins are a perfect shape for swimming. Dolphins have a thick layer of blubber to keep them warm.
A dolphins has a hole in the top of its head, so it can breath on the surface of the ocean. Dolphins have flippers to help them move through the water. They can dive 500 metres below the surface of the water.
A mother dolphin can only have one baby at a time.
Dolphins eat fish and squid. They catch their food by sending a special noise which tells the dolphin that fish or squid is near.
Dolphins are known to play around boats. They are a very social animal.