Coral reefs are probably home to at least a quarter of the entire biological diversity of the oceans, a seemingly limitless number of species, and serve as some of the most beautiful habitats in the world. Although they cover just over one percent of the world’s continental shelves, coral reefs serve as important habitat to as many as one to three million species, including more than twenty-five percent of all marine fish species.18 These millions of species feed, reproduce, shelter larvae and take refuge from predators in the vast three-dimensional framework offered by coral reefs.