Some problems exist with this species' status or catch methods, or information is insufficient for evaluating.Marlin, Blue – Hawaii, LonglineThese fish contain levels of mercury or PCBs that may pose a health risk to adults and children. Our source of information is  We also recommend that you check local advisories.

Blue Marlin is a large pelagic species, found in tropical and temperate waters worldwide. This assessment is for Blue Marlin caught in the U.S. Hawaii fishery only. Blue Marlin mature early, produce many eggs, and grow fast, reaching sizes up to 450 cm and 900 kg.  There is some uncertainty about the abundance level of Blue Marlin in the Pacific Ocean, but fishing is occurring at a sustainable level.

This species is primarily captured with pelagic longlines, which cause minimal damage to ocean habitats, but result in bycatch of sea turtles, marine mammals, seabirds, and sharks. In the U.S. Hawaii fishery, managers have put in place regulations to reduce bycatch of these vulnerable species.

Consumers should note that illegally-sold Atlantic Blue Marlin reaches the U.S. Market. Be wary unless you are certain that the Blue Marlin you are considering was caught in the U.S. Hawaii fishery.

Full species report here.

This fish may have high levels of mercury that could pose a health risk to adults and children. More info here about mercury in marlin. Check out our mercury in seafood section.