Author: Bigelow & Schroeder, 1944
FBname: Pacific sleeper shark
Comments: Demersal and mesobenthopelagic (Ref. 119696); found on continental shelves and slopes (Ref. 247).  At high latitudes, occasionally occurs in littoral and even intertidal areas; in lower latitudes it may never come to the surface and ranges down to at least 2,000 m (Ref. 247), reported to about 2,205 m in the Hawaiian Is. as recorded by camera arrays (Ref. 119696).  Feeds on bottom animals such as fishes, octopi, squids, crabs and  tritons; also harbor seals and carrion (Ref. 247).  Ovoviviparous (Ref. 205), with 300 pups in a litter (Ref. 247), length at birth about 42 cm or less (Ref. 26346).  The flesh contains a type of toxin which, when eaten, produces symptoms of drunkenness (Ref. 583).  Possibly reaches lengths greater than 700 cm (Ref. 247).  It is of limited importance in fisheries, with older small-scale commercial harvests reported in southern areas; and based on its population dynamics it can be sensitive to overfishing (Ref. 117245).