Nathalie Lasselin’s Deep Dive takes us beneath the surface of Canada’s St. Lawrence River to reveal a hidden world worth protecting. From above, the river appears healthy, with eagles soaring overhead and beavers along its banks, but Lasselin’s dives expose the unseen impacts of pollution and debris. By documenting fish weaving through rocky reefs, collecting samples, and hauling up waste, more than six tons in a single year, she turns the invisible into something we cannot ignore. This story is powerful because it reminds us that rivers hold layers of life often overlooked, and that awareness is the first step toward action. Through her lens, we see that conservation isn’t just science, it’s storytelling that inspires communities to care for what lies beneath the surface. Nathalie Lasselin’s Deep Dive proves that when we illuminate the unseen, we motivate others to join in protecting it.