Many gray fish swim in shallow water

Photo: John Burns/NOAA

Ulua/Giant Trevally

Ulua, or giant trevally, are found throughout the Hawaiian Islands, particularly in Papahānaumokuākea Marine National Monument. Ulua are apex predators, and are known for cooperative feeding habits with Hawaiian monk seals. During ancient times in Hawaiʻi, the ulua was used as a sacrifice in religious ceremonies, sometimes replacing humans.

A world map highlighting portions of the pacific and Indian oceans

SCIENTIFIC NAME: Caranx ignobilis

DIET: Crustaceans and fish

LENGTH: Up to 5+ feet

WEIGHT: 100+ lbs

LIFE SPAN: 20 years

THREATS: Overfishing

FUN FACT: The ulua is mentioned in various Hawaiian songs, chants, and proverbs, generally likening the fish to a strong warrior or a handsome man.

ʻAʻohe ia e loaʻa aku, he ulua kāpapa no ka moana.

He cannot be caught for he is an ulua fish of the deep ocean.