Pacific Sleeper Shark

Squiggly Line
Squiggly Line


Size, Habit, Diet, Feeding Habits & More for the Pacific Sleeper Shark


Grow up to 23 feet in length and weigh up to 1,000 pounds, making them one of the largest sharks in the world


Known for their long and cylindrical body shape, dark brownish-gray coloration, and small eyes

Scientific name

Somniosus” means “sleepy” in Latin


Opportunistic feeders, consuming a diverse range of prey types. Variety of fish, squid, octopus, and marine mammals such as seals and porpoises



Species of deep-sea shark that inhabits the cold waters of the North Pacific Ocean

Lives in the continental slope and shelf depths at depths ranging from 656 to 10,827 feet

Preferred habitat

They have also been found as deep as 12,100 feet underwater. They prefer to live in colder temperatures ranging between 28 and 41 degrees Fahrenheit

Preferred habitat

Due to their sluggish behavior, they are known to ambush their prey rather than chase them

Feeding Habits

They are solitary creatures and do not form schools or travel in groups


Have a modified liver that is almost as large as their entire body, making up around 25% to 33% of their total weight

Unique feature


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