Makaira mazara can reach a maximum length of 5 metres (16 ft), but the average is around 3.5 metres (11 ft). It can reach a weight of about 625 kilograms (1,378 lb).[1] Body is elongated but it is not very compressed, with two dorsal fins and two anal fins. Dorsal fins have a total of 40 to 45 soft rays, while anal fins have 18 to 24 soft rays. The pectoral fins, which have 21 to 23 rays, are falcate and flexible, and can be drawn in to the sides of the body. Nape is highly elevated. The upper jaw forms a robust but not very long beak, round in cross section. Caudal peduncle shows strong double keels on each side. Body color is blue-black dorsally and silvery white ventrally, sometimes with light blue vertical stripes.