What Divers Should Know About Wolf Eel

Within the North Pacific Ocean, wolf eels (Anarrhichthys ocellatus) inhabit caves, crevices, and rocky reefs, from shallow waters down to an impressive depth of 226 meters (741 ft). This unique species, despite its common name and eel-like appearance, is actually a type of wolf fish, distinguished by its paired gill slits and pectoral fins. Growing quite large, they can reach lengths up to 2.4 meters (7 ft 10 in) and weigh 18.4 kg (41 lb).

Recognizing them is straightforward: younger wolf eels display an orange hue with prominent dark spots, maturing into shades of grey, brownish-grey, or dark olive. These powerful predators use robust jaws equipped with canine teeth upfront and molars in the rear to crush their diet of hard-shelled invertebrates like crustaceans, sea urchins, and mussels.

While large wolf eels are typically curious and rarely aggressive, their powerful bite can inflict painful injuries on humans, so maintaining a respectful distance is always advised. They are fascinating creatures known for their potential to pair for life, sharing a cave and cooperatively guarding their eggs. With a lifespan of about 20 years, these long-lived fish are a truly memorable encounter for any diver.