This article discuses the unusual bumphead fish, which as the name suggests, breaks off large chunks of coral using its enlarged head, a process which may be seen as detrimental to coral reefs. However, the species also has positive effects, including dispersal of coral. The article highlights the need to look at ecosystems as a whole rather than single species; i.e. finding a balance in order to preserve the bumphead fish without increasing numbers to a dangerous level. In this case stability is achieved by ensuring thriving shark populations, which control the fish. This example is applicable to many ecosystems and has proven to be a successful approach.