You know the fish, you know the creatures, but what about the animals that actually form a coral reef? Only classified in the animal kingdom since 1753, corals come in myriad colors and shapes. This is the book you'll need to sort them out. 530 color photographs display stony corals, gorgonians, fire coral and black corals. If you want to know more about marine plants, an appendix includes over 100 photographs of marine algae.