Distributions and Habitats: Somniosidae FAMILY Somniosidae Jordan, 1888 - sleeper sharks GENUS Centroscymnus Barbosa du Bocage & de Brito Capello, 1864 - velvet dogfishes Species Centroscymnus coelolepis Barbosa du Bocage & de Brito Capello, 1864 - Portuguese dogfish Distribution: Cosmopolitan in tropical and temperate to cold temperate seas, including the Arctic and the western Mediterranean Sea. Habitat: marine. Species Centroscymnus macracanthus Regan, 1906 - largespine velvet dogfish Distribution: Southwestern Atlantic and southwestern Pacific. Habitat: marine. Species Centroscymnus owstonii Garman, 1906 - roughskin dogfish Distribution: Atlantic, Pacific and southeastern Indian Ocean off Australia. Habitat: marine. GENUS Centroselachus Garman, 1913 - velvet dogfishes Species Centroselachus crepidater (Barbosa du Bocage & de Brito Capellos, 1864 - golden dofish Distribution: Cosmopolitan in tropical through warm temperate seas. Habitat: marine. GENUS Scymnodalatias Garrick, 1956 - dogfishes Species Scymnodalatias albicauda Taniuchi & Garrick, 1986 - whitetail dogfish Distribution: Southeastern Indian Ocean and southwestern Pacific. Habitat: marine. Species Scymnodalatias garricki Kukuev & Konovalenko, 1988 - Azores dogfish Distribution: North Atlantic. Habitat: marine. Species Scymnodalatias oligodon Kukuev & Konovalenko, 1988 - sparsetooth dogfish Distribution: Southeastern Pacific. Habitat: marine. Species Scymnodalatias sherwoodi (Archey, 1921) - Sherwood dogfish Distribution: Southwestern Pacific: New Zealand. Habitat: marine. GENUS Scymnodon Barbosa du Bocage & Brito Capello, 1864 - velvet dogfishes Species Scymnodon ichiharai Yano & Tanaka, 1984 - Japanese velvet dogfish Distribution: Western North Pacific. Habitat: marine. Species Scymnodon plunketi (Waite, 1910) - Plunket shark Distribution: Southwestern Pacific. Habitat: marine. Species Scymnodon ringens Barbosa du Bocage & de Brito Capello, 1864 - knifetooth dogfish Distribution: Eastern Atlantic (including North Sea); southwestern Pacific. Habitat: marine. GENUS Zameus Jordan & Fowler, 1903 - velvet dogfishes Species Zameus squamulosus (Günther, 1877) - velvet dogfish Distribution: Cosmopolitan in warm seas (including Red Sea, Hawaiian Islands). Habitat: marine. GENUS Somniosus Lesueur, 1818 - sleeper sharks Species Somniosus antarcticus Whitley, 1939 - Southern sleeper shark Distribution: Circumglobal in Southern Hemisphere. Habitat: marine. Species Somniosus longus (Tanaka, 1912) - frog shark Distribution: Japan and New Zealand. Habitat: marine. Species Somniosus rostratus (Risso, 1827) - little sleeper shark Distribution: Mediterranean Sea, Atlantic. Habitat: marine. Species Somniosus microcephalus (Bloch & Schneider, 1801) - Greenland shark Distribution: Arctic Ocean; both sides of the North Atlantic (including western Baltic Sea, northern North Sea). Habitat: marine. Species Somniosus pacificus Bigelow & Schroeder, 1944 - Pacific sleeper shark Distribution: North Pacific and Arctic Ocean. Habitat: marine.