Turtle Diary

 

Whales, seals, dolphins and sea otters belong to this family. Seals include sea lions and walruses. Seals have flippers instead of arms and legs, which makes them good at swimming but they are not good at walking.

The common feature of the members of this family is that they are good swimmers. But unlike other water animals, water mammals have to come to the surface periodically, to breathe air.

Water mammals, like other mammals, are warm-blooded, give birth to young ones and the mother produces milk for the baby.

Whales and dolphins look like fishes but are mammals. There are two kinds of whales - toothed whales and baleen whales. A toothed whale eats fish and large sea animals like seals. Baleen whales do not eat fish or large sea animals. They filter tiny plants and animals called 'planktons' from seawater. The whales live in groups called 'pods'. The Blue whale is the largest animal in the world.  It can be more than 30 meters in length and can weigh up to 200 tons. Its heart is the size of a small car.

The sea otter is the smallest sea mammal.

Dolphins are small whales and they are highly intelligent. Whale and dolphin babies are called 'calves'.