Alaska plaice (Pleuronectes quadrituberculatus) is a saltwater fish that live in the North Pacific Ocean. Alaska plaice are right-eye flounders which live on the sandy bottoms of the continental shelf, up to 600 metres deep. Their geographic range is from the Gulf of Alaska in the east, to the Chukchi Sea in the north, to the Sea of Japan in the west. Alaska plaice feed mostly on polychaetes, but also eat amphipods and echiurans.