Here are some related terms:
* Native: A plant or animal that naturally occurs in a particular region.
* Indigenous: Similar to native, but often used to emphasize the original inhabitants of a place.
* Introduced: A plant or animal that has been brought to a region from somewhere else.
* Exotic: Similar to introduced, but often used to describe plants or animals that are considered unusual or striking.
Endemic species are of great interest to biologists because they are often specialized to their unique environment and can provide insights into evolution and biodiversity. They are also particularly vulnerable to habitat loss and other threats.