A species of dolphin is born naturally blind in the Indus and Ganges rivers in South Asia. These dolphins have a highly sophisticated sonar system and swim on only one side of their body.

In 1903, there were originally only eight Crayola crayons in a box and they sold for five cents.

Although the outsides of a bone are hard, they are generally light and soft inside. They are about 75% water.

AMAZING FACTS