Most species of king crab are dark red, golden-orange or brown-bluish colored. King crab has large body covered with thick, armored shell. It has five pairs of legs. First pair is transformed into unevenly-sized pincers (right claw is larger) that are used for feeding. Alaska King crab is rich in high-quality protein and omega-3 fatty acids. It's good for your heart, muscles, joints, eyes and even your brain!