crab

Shellfish; Cancer and Carcinus spp.; king crab is Limulus polyphemus. A 100-g portion (500 g with shell) is a rich source of protein, niacin, zinc, copper, and selenium; a good source of iron; a source of vitamins B₂ and B₆; contains 400 mg of sodium and 5 g of fat, of which 13% is saturated; supplies 130 kcal (545 kJ).