The fascinating photos presented in this exhibition capture the power and fragility of an ever-changing environment: the ocean. Immerse yourself in a rich and mysterious world of discovery where science meets art! An endangered ocean. A mysterious ocean. An ocean to share. A resilient, sustainable ocean. These were the four themes that inspired the marine science students from France and Québec who participated in the second annual photo competition An ocean to protect. Held in fall 2021, the competition was organized by the Institut France-Québec pour la coopération scientifique en appui au secteur maritime (IFQM), in partnership with Océanopolis, a marine environment discovery park in Brest, France, and the Montréal Biodôme. The exhibition is one of several activities being organized for the Ocean Decade initiative.