CS, MS of a sick otter on plank in pool on deck of a Canada Research ship in Alaska. Several shots from different angles of men bringing a cage, taking down otter in cage from ship to motorboat. Several shots from different angles of scientists aboard motorboat sailing and arriving at a small island, unloading the otter in cage and releasing it, of scientists watching otter as it swims away, one man filming and other one watching departure of otter through binocular. Several shots from different angles of wracks floating at water surface (kelp beds), of rocky coastline, of flock of sea birds flying or resting on rocks. AERIAL SHOTs along coastline, with part of aircraft in evidence in some shots, of rocks, water current, of sea lions rookery on rocks, of men in cockpit, of mountains on coastline. Several shots from different angles of otter floating in water on his back and of two Fisheries patrol men in boat following him. MS of waves rolling in and breaking onto ocean. Various shots of otters on big rocks with one of them diving into water. Underwater shots showing rocky floor with crabs, shell fishes and an unidentified fish. MCSs, CSs of a diver coming at surface and giving to man on boat an unidentified red mollusc and shell fishes.