The Pacific Sleeper Shark (Somniosus pacificus) inhabits deep, cold waters of the North Pacific. It is known for its sluggish nature, large size, and a diet that includes fish, squid, and even carrion. This elusive shark can reach lengths of up to 14 feet and has a unique ability to slow its metabolism to survive in low food availability conditions.

The Somniosus pacificus, commonly known as the Pacific Sleeper Shark, is native to the North Pacific Ocean. Its geographical distribution spans from the Bering Sea and the Aleutian Islands in Alaska, down the west coast of North America to Baja California, and across to the waters around Japan, the Sea of Okhotsk, and the Yellow Sea.

The Pacific Sleeper Shark inhabits cold, deep ocean waters, typically found at depths ranging from 200 to 2,000 meters. It is often associated with continental and insular slopes and can be found in environments characterized by low temperatures, high pressure, and limited light availability.

As a deep-sea predator and scavenger, the Pacific Sleeper Shark occupies an ecological niche where it feeds on a variety of organisms, including fish, cephalopods, and carrion. Its role as both predator and scavenger helps maintain the balance of deep-sea ecosystems.