Best Somniosidae

The Pacific sleeper shark, Somniosus pacificus, is a large shark of the family Somniosidae found across the North Pacific. It inhabits cold water from continental shelves to depths exceeding 2,000 metres and is closely related to the Greenland shark. Its slow swimming, soft body, and broad diet suit...

The Southern Sleeper Shark (Somniosus antarcticus) is a large, deep-water shark native to the Southern Ocean around Antarctica. Closely related to the Greenland shark, it is a slow-moving predator that can grow over four meters in length and primarily feeds on Antarctic toothfish, squids, and seals....

The Knifetooth Dogfish is a small, poorly understood deep-sea shark found in the eastern Atlantic Ocean, notable for its uniquely bladed, knife-like lower teeth.

The Portuguese dogfish is a deepwater shark species belonging to the family Somniosidae. Scientifically known as Centroscymnus coelolepis, it inhabits the continental slopes and abyssal plains of the Atlantic and Pacific Oceans. This species is recognized as one of the deepest-living sharks, having...

Zameus squamulosus (Somniosidae), a cosmopolitan deep-sea squaliform shark recorded at 200–2,000 m worldwide, named for its distinctively dense, velvety skin texture.

Longnose Velvet Dogfish (Centroscymnus crepidater) is a small deep-sea shark in family Somniosidae found across the Atlantic and Indo-Pacific at depths exceeding 1,500 m.

The little sleeper shark is Somniosus rostratus, a small deepwater sleeper shark notable from the northeast Atlantic and western Mediterranean down to 1,000 m.

A deep-sea squaliform shark (Somniosidae) allied to the velvet dogfish but distinguished by notably enlarged dorsal fin spines, found in mesopelagic and bathypelagic waters.