For years many people have used the word dolphin and porpoise interchangeably.
Many people mistakenly believe that a dolphin is a porpoise and vice versa.
They are very similar indeed and share many common characteristics. However, there are some differences between the two. Let s discuss the similarities and differences so you can amaze your friends with your knowledge. Both dolphins and porpoises are mammals. Even though they both live in the ocean, they are not fish.