More than 75 percent of the globe is covered by the oceans. It is sometimes difficult to understand why it is called Planet Earth rather than Planet Ocean. Since half the worlds human population lives within a stones throw of an ocean coastline, the oceans health is increasingly important. Rich with resources and potentialas a source of renewable energy, new drugs, drinking waterfor years we have treated them as both infinite and undamageable. But they are not. Over-fishing, climate change, pollution, acidification, and more have put the worlds oceans and marine life at great risk. Oceans gathers some of the most insightful visionaries, explorers, and ocean lovers marine biologists, politicians, environmentalists, fishermen, sportsmen, deep divers, and morein a unique anthology, in which each speaks to a unique aspect of our worlds most dimly understood dimension.