On the 2,300-kilometer (1,400-mile) length of the Great Barrier Reef, only one species behaves like that, and they’re not as pretty as clownfish. Juvenile spiny chromis damselfish remain on ...

A clown fish named Marlin lives in the Great Barrier Reef and loses his son, Nemo, after he ventures into the open sea, despite his father's constant warnings about many of the ocean's dangers.