Atlantic Wolf Fish

Wolf fish are apex invertebrate predators of the cold Norwegian fjords, using their powerful crushing teeth to crack sea urchins, crabs, and mussels. They are resident nesters — pairs guard egg clusters on the seabed throughout winter — and individuals return to the same den year after year, making the Agdenes wreck portholes reliable sighting spots. Their anti-freeze proteins allow activity at water temperatures near 0°C.