Whales

Most whales feed on plankton.

Whales come under mammals.

Whales can remain submerged for a long time.

Whales are said to have lived on land long ago.

As likely as not, whales will be extinct by the end of this century.

It is believed that whales have their own language.

Whales feed on plankton and small fish.

It was believed that whales were fish.

Whales are similar to fishes in shape.

Whales feed on small fish.