Dangers to Reefs(con't)

There are predators of the coral reefs in the world. Amongst these reefs, perhaps the most well-known is the Australian Great Barrier Reef. It is currently being destroyed by none other than the Crown-of-Thorns Sea Star. Other than that,the parrotfish has chisel-like teeth to devour coral with.

Of course, the best-known coral thief is mankind. For years we have stolen from reefs, whether as scientific specimens or tourist mementos.