Species: Isurus oxyrinchus, Shortfin Mako, Shortfin Mako Shark

Isurus oxyrinchus Rafinesque, 1810

Shortfin Mako, Shortfin Mako Shark

Body moderately slender; eye relatively small; snout relatively long and sharply pointed; nostrils on side of snout; teeth smooth-edged, long and slender at front of jaws, blade-like and triangular at rear; 5 long gill slits, all before pectoral; a large first dorsal fin, origin over pectoral border; very small second dorsal and anal fins positioned near base of tail fin, origin of anal under middle of 2nd dorsal base; pectoral fins relatively long and narrow, 16-17% TL, less than head length; tail almost symmetrical, semilunar; tail base flattened, with large keel that extends onto tail fin.

Dark blue shading to nearly white on ventral parts; white under snout.

Attains 396 cm; size at birth between 60-70 cm.

Habitat: oceanic, pelagic.

Depth: 0-740 m.

Circumglobal in tropical and warm-temperate seas; Maine to Brazil.