Our oceans program, like all of our work at Bloomberg Philanthropies, aims to ensure better, longer lives for the greatest number of people. So it’s good news that the United Nations International Coral Reef Initiative has declared 2018 the International Year of the Reef. Coral reefs are home to one in every four fish in the ocean, and are a critical backbone of ocean ecosystems. Unfortunately, climate change threatens to destroy 90 percent of reefs in the next three decades.