A single bluefin tuna recently sold for $1.76 million at the Tsukiji fish market in Tokyo. The rising price of sushi impacts high-end diners, but it also underlines the threats to vulnerable, fish-dependent coastal communities. Fish populations are swiftly declining, and half the world’s catches come from small fisheries supporting the daily survival of local villages. Financial expert Jeremy Grantham and environmentalist Brett Jenks have completed an extensive analysis of the rapid depletion of many global resources. Together, they will analyze the status of the world’s oceans and the people that depend on them. Is there a silver lining to the problems at sea? Can protecting marine areas be the key to feeding a billion people?