Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the biggest animal that has ever existed. Whales can be found in every ocean ...

There are more than 500 species of shark found across the world, and they range in size from centimetres long to ocean giants. Read on to find out about the biggest sharks in the world. The whale ...

Whales are the largest animals to ever exist on this ... Meet Pakicetus. The very first whale. Life on Earth spent millions of years clawing its way out of the oceans. But whales took all that ...

NOVA: When Whales Could Walk Wednesday, April 2 at 9:00 pm In Egypt’s Sahara Desert, massive skeletons with strange skulls ...