Some sharks remain on the move for their entire lives. This forces water over their gills, delivering oxygen to the blood stream. If the shark stops moving then it will suffocate and die.

Female elephants are called cows. They start to have calves when they are about 12 years old and they are pregnant for 22 months.

The Nike swoosh was invented by Caroline Davidson back in 1971. She received $35 for making the swoosh. The first shoe with the swoosh was introduced in 1972.

AMAZING FACTS