For nine days and nine nights filmmaker Oliver Hartman—a member of documentary collective Jungles in Paris—immersed himself in the lives of harpoon fishermen in Nova Scotia. Between July and September, the four-strong crew trawl the Canadian waters for swordfish, scanning the surface of the waves for the creature’s distinctive crescent-moon dorsal fin. The men only use spears to kill the fish, and, while bloody and extremely hands on, this method allows them to only catch what they can see, rather than indiscriminately hooking tuna, shark and other bycatch.