The Pacific sleeper shark, Somniosus pacificus (Bigelow and Schroeder, 1944), is a large deep-water shark reaching about 4.4 m in length for males and 4.3 m for females. It is thought that this species can reach up to 7 m.
SLEEPER SHARK
Somniosus microcephalus, also known as the Greenland shark, and the gurry shark, lives very deep in the North Atlantic Ocean. It lives at depths down to 1,800 feet (550 m) in very cold water (36-45°F=2-7°C).
Little sleeper shark (Somniosus rostratus) ' more
Preservation
Information ...
Somniosidae
(Sleeper sharks)
Centroscymnus
Portuguese dogfish (C. coelolepis) Â- Shortnose velvet dogfish (C. cryptacanthus) Â- Roughskin dogfish (C. owstoni) ...
Related Species Pacific Sleeper Shark (Somniosus pacificus) lacks spine in front of dorsal fins; first dorsal fin closer to insertion of pelvic fins; occurs in deep water from Bering Sea to Baja California.
The pygmy shark (Euprotomicrus bispinatus), the smallest of all the shark species, is a sleeper shark of the Dalatiinae subfamily. It is found in subtropical and warm temperate oceans worldwide, from the surface to depths of 1,800 metres.
Order Squaliformes (74 marine species): bramble sharks, sleeper sharks, dogfish sharks
Order Squantiniformes (12 marine species): angel sharks
Order Pristiophoriformes (5 marine species): sawsharks ...
SQUALIFORMES
Includes sleeper sharks, dogfish sharks, bramble sharks
NO CURRENT ENTRIES
PRISTIOPHORIFORMES
saw sharks ...
The Greenland shark is one of the few sharks found in polar waters year-round. Because of its lethargic nature, the Greenland shark is also known as the sleeper shark.
to 3 to 4 feet (.9-1.2 m)
Range:
Alaska to Baja California and worldwide in temperate and subartic waters; in depths from the surface to 3,000 feet (900 m)
Relatives:
pygmy shark, sleeper shark; Family: Squalidae ...
 See also: Sleeper, Shark, Whale, Squid, Dogfish
  
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