Wildlife
Since Catalina Island was never connected to mainland California, it was originally lacking in all terrestrial life. Any plants or animals that arrived on the island had to make their way across miles of open ocean. The original species to come to the island arrived by chance by blowing over on the wind, drifting or swimming over the ocean, or flown over by wing. Starting with the Native Americans and continuing today, animals and plants have also been introduced by humans, both intentionally or accidentally.
Catalina is home to at least fifty endemic species that occur naturally on the island and nowhere else in the world. This limited distribution of a species may result from the extinction of the original population on the mainland combined with its continued survival on the island where there may be fewer threats to its continued existence.
Read more about this topic: Santa Catalina Island, California
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