Porbeagle sharks are cold water sharks preferring temperatures of 40-50 degrees and sometimes cooler.  Sometimes confused with a mako, porbeagles have shorter v shaped teeth and a distinctive white area on the backside of the dorsal fin.  Rarely a jumper, a porbeagle is still a fast swimmer. Mako sharks are believed by some to be one of the fastest fish in the ocean.  Capable of  up to 20 foot leaps, they can out leap any marlin.  Makos have a maximum weight of 1600 pounds of which the larger specimens are female.  They are rare in our waters but are occasionally hooked.   Thresher sharks have a max weight of 900 pounds.  They are easily recognized by the long upper tail section that is almost as long as its body which is uses to strike fish with.  These sharks are strong fighters, occasional jumpers and very fast swimmers.