Why Is A Whale Not A Fish?

Because it does not lay eggs like fish do. It gives birth to a calf which is what they call the baby whales when they are born until they become adults.

1. FISH - are cold blooded and breathe underwater.
              They move their vertcal tail fins from side to side when they    
              swim.

2. WHALES - maintain a warm and constant body temperature and
                   breathe air with their lungs.
                   They move their horizontol tail fins up and down to propel
                   themselves through the water.