* Porpoises are closely related to dolphins. Porpoises and dolphins are both members of the family Delphinidae, along with killer whales, pilot whales, and belugas.
* Porpoises are carnivores. Their diet consists primarily of fish, squid, and crustaceans.
* Porpoises are echolocators. They use sound waves to navigate their surroundings and find prey.
* Porpoises are very social animals. They live in groups called pods, which can range in size from a few individuals to over 100.
* Porpoises are intelligent creatures. They are able to learn tricks and even communicate with each other using a series of clicks and whistles.
* Porpoises are endangered. Many species of porpoises are threatened by hunting, pollution, and habitat destruction.