The Safina Center

Koho salmon.Koho salmon.Photo taken by: Carl Safina

Species has a combination of problems such as overfishing, high bycatch, and poor management.
Marlin, Blue – Imported Pacific These fish contain levels of mercury or PCBs that may pose a health risk to adults and children.

Blue Marlin is a large pelagic species, found in tropical and temperate waters worldwide. Blue Marlin mature early, produce many eggs, and grow fast, reaching sizes up to 450 cm and 900 kg.

Blue Marlin are caught throughout the Pacific Ocean. The last population assessment for Blue Marlin in the Pacific indicated that abundance levels were moderate, but the assessment has not been updated for over a decade.

This species is primarily captured with pelagic longlines, which result in minimal habitat damage, but do catch some vulnerable non-target species. There is minimal management in place for the Blue Marlin fisheries in the Pacific, with the exception of the U.S. Hawaii fishery.

Consumers should also note that illegally-sold Atlantic Blue Marlin reaches the U.S. Market.

Full Seafood Watch 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.