At first sight, you may think a dolphin is a fish. But actually, dolphins are mammals. Like you, they are warm-blooded creatures that feed on their mother's milk. It is the most successful group of marine mammals. Unlike fish, marine mammals must often come to the surface to breathe.
Marine mammals are fast swimmers and strong hunters.
The Greek scientist and philosopher Aristotle recognized this over 2,400 years ago. He also noticed that whales and dolphins must come up to the surface to breathe. By Elizabeth Shields Projects In Room C9, we did mission and explorer reports, and building missions. The missions that some kids built were beautiful. Most of the class built missions because they thought it would be more fun and easier.