Given that we are living during the Anthropocene extinction, the demise of salmon populations should come as no surprise. Yet understanding the direct causes of their dropping numbers defies simple explanation. Atlantic Salmon: Lost at Sea follows scientists in the field, river farmers, and other stakeholders with the aim of illustrating the interconnectedness of the problem. Where are salmon most vulnerable? In the rivers where they spawn? In the oceans where they grow? Is overfishing the only cause of their decline? Each of these questions gets a direct, clear answer that reminds us of the “systems” nature of the dilemma.

The cinematography in this film stands out, so much so that one might watch simply for its beauty. The directors spent a lot of time doing more than just orchestrating cinematic shots of nature; they carefully considered how the images carry and complement the plotline. The videos of salmon in...

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