Coral reefs around the world are in trouble. According to the World Wildlife Fund, about one-quarter of coral reefs are considered damaged beyond repair, with another two-thirds under serious threat. Some suffer from heavy fishing pressures, while others are succumbing to pollution or careless tourism. Climate change, with its attendant rising sea temperatures, is exacerbating the problem, speeding coral deaths.
More than half a billion people live near corals, relying on them for food, shelter from storm surges and the income that tourism brings. With natural reefs diminishing, artificial reefs are increasingly gaining favor. These structures usually take the form of sunken ships, decrepit oil platforms or other human trash.
But is depositing more human refuse in the oceans in order to create artificial reefs healthy for the environment — and for us?