To about 13 ft (4 m).
Newfoundland, Canada, to Brazil, including Gulf of Mexico and Caribbean Sea. Common in U.S. Northeast.
Offshore from surface to at least 500 ft (152 m); generally in waters >61°F (16°C).
Porbeagle has secondary keels on caudal fin, teeth with lateral cusplets; prefers colder water. Longfin mako has larger eyes, longer pectoral fins, dusky or blue-black underside of snout and area around mouth. Blue shark lacks lunate caudal fin, caudal keels, sharply pointed snout. White shark has triangular teeth with serrated edges, blunter snout.
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Text descriptions taken from Guide to Sharks, Tunas, & Billfishes of the U.S. Atlantic and Gulf of Mexico |
Shortfin mako length-weight relationship
Transporting a large shortfin makoShortfin mako (top) and porbeagle (bottom)comparison
Capt. Tom's Guide to New England Sharks
Canadian Shark Research Laboratory
