The Game Changers, What the Health and Cowspiracy have inspired conversations about whether people should adopt plant-based diets. The latest addition to the genre, Seaspiracy, has similarly created something of a splash after it was released on the network, which has 200 million subscribers, in March. The film’s director, Ali Tabrizi, 27, is the impassioned frontman for what is framed as an exposé of the world’s fish stocks crisis. His travels take in the enduring practice of whaling, the prevalence of slavery in Thai fishing outfits and a brief look at whether aquaculture (that is, “agriculture” for fish) is the solution to what the UN calls the “continuous increasing trend” of overfishing.