What animal have a fins?

Many animals have fins! Here are some examples:

* Fish: This is the most common answer, as fins are the defining characteristic of fish. They come in various shapes and sizes depending on the species and their function (swimming, maneuvering, stability, etc.).

* Whales and dolphins: These marine mammals evolved from land-dwelling ancestors and have flippers, which are modified fins used for swimming.

* Sea turtles: Sea turtles have flippers similar to whales and dolphins, used for powerful swimming in the ocean.

* Sea lions and seals: These pinnipeds also have flippers for swimming, although they are more adapted for movement on land than whales and dolphins.

* Some amphibians: Some amphibians, like the mudpuppy, have external gills and fins.

So, when you think of fins, think of all the amazing creatures that use them to navigate the water!