Coral Reefs

What is more, this number is expected to double in coming decades while the area of high-quality reef is expected to halve. | Coral reefs support more marine life than any other ocean ecosystem and are, not surprisingly, a favorite pursuit for many divers. | In combination with the very real threat of climate change, which could lead to increased seawater temperatures and ocean acidification, we start to arrive at some quite frightening scenarios. | But as well as being physically and biologically spectacular, coral reefs also sustain the livelihoods of over half a billion people.