PORBEAGLE SHARK
Lamna nasus
GENERAL DESCRIPTION
The porbeagle (Lamna nasus) is a common, fast-swimming, potentially dangerous shark.
The porbeagle shark, Lamna nasus (Bonnaterre, 1788), aka blue dog, beaumaris shark (UK), and mackerel shark, is closely related to the salmon shark, Lamna ditropis, measuring up to 3.7 m in length and weighing up to 230 kg.
Porbeagle Shark
The porbeagle is a stout shark that is blue-gray on top and white underneath with a white patch on the trailing edge of the first dorsal fin.
The Tiger Shark has a varied diet and because of this it must be able to twist and turn in the water easily when hunting, whereas the Porbeagle shark, ...
A double keel is unusual among sharks; the only other double-keeled tail is on the closely related porbeagle shark. Salmon sharks can grow to over 10 feet long, but the average is usually in the 6.5-8 ft range.
Porbeagle sharks are unique in that they have been known to play tag with other porbeagles, pass seaweed to each other, and toss driftwood out of the water in a manner similar to dolphins.
 See also: Shark, Porbeagle, Eagle, Squid, Whale
  
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