On October 5 and 6, the fourth Our Ocean conference will convene in Malta, home of the International Maritime Organization. This conference gathers heads of state, scientists, conservationists, entrepreneurs, students, and visionaries to address marine pollution, sustainable fisheries, climate change, and marine protected areas. In 2016, countries committed $9.2 billion and 9.9 million square kilometers of ocean to these critical areas of action. This year, two new areas of action are on the agenda: maritime security and a sustainable blue economy. The world’s ocean coalition is increasingly recognizing that ocean health and human security are inextricably linked.