Sam Carlson journeys out to a kelp bed to fish for kelp greenling to use as bait in a mink trap. New episodes of Port Protection: Alaska air Tuesdays at 9/8c on National Geographic. | Life Below Zero

Breanna Miethe and Oliver Johnson perform maintenance on their boat prior to their shakedown cruise. New episodes of Port Protection: Alaska air Tuesdays at 9/8c on National Geographic. | Life Below Zero

Life in rural Alaska is fragile. For humans to survive, they have to rely on ingenuity. Canning fish is one way to keep a steady food supply for the winter. #PortProtection | National Geographic TV