Spot shrimp are the largest shrimp in the North Pacific, ranging from the waters off Unalaska Island, Alaska, to San Diego. Four other species of the closely related commercially valuable shrimp share all or part of that range with spot shrimp: pink shrimp (Pandalus borealis), which is the foundation of the shrimp trawl fishery in Alaska; humpy shrimp (Pandalus goniurus), which are often marketed as pink shrimp; sidestripe shrimp (Pandalopsis dispar), which live in deeper water; and coonstripe shrimp (Pandalus hypsinotis), which are harvested by commercial and recreational pot fisheries with the spot shrimp. The abundance of these very common denizens of the North Pacific vary with oceanographic conditions.