U.S. Pacific pelagic longline fisheries operating in the central North Pacific have been subject to a series of regulations to reduce bycatch of protected species, including seabirds and sea turtles. Cetaceans are also occasionally caught, and the bycatch of false killer whales, Pseudorca crassidens , in the Hawaii‐based deep‐set longline fishery currently exceeds allowable levels under the Marine Mammal Protection Act (MMPA)....