Fill in the gaps.

A whale is a very big ... . Whales live in the seas and in the ... . Some whales swim with each other. They travel in large groups, called ... .
They swim around, looking for food. Whales ... on sea life. Some whales eat plants. Other whales have ... and can eat ... and small fish. Whales must stay ... all the time. However, they also must come to the top of the sea to ... . When a whale ... out of the water to catch a ... of air, it is an amazing sight.