They all are different sizes and eat different things. Whales are mammals. They are not fish. Let's think about how whales and fish are different . Life in the sea depends on delicate balance between predators and prey.
Whales fill an important part in the food chain .
Here is an interesting puzzle about whale body parts. SeaWorld rescues injured whales. J. J., an orphaned gray whale calf, was rescued and released into the Pacific Ocean. On the Discovery Online web site, you will be able to listen to the songs of humpback whales . The Process 1.