Lamna Nasus

Lamnidae

Lamniformes

Offshore, Continental Shelves, Slopes, Inshore

300 - 550 pounds

60" - 140"

Porbeagle Shark

Also Known As: Mackerel Shark

Guides Who Fish This Species

Porbeagle (Lamna nasus) Fish Description

The Porbeagle Shark belongs to the mackerel shark species, this includes the great white shark and salmon shark. It has a stout body and is shaped like a torpedo. It’s blue-grey in color and has a white belly underside. To easily distinguish a porbeagle, check the rear side of its first dorsal fin, you’d find a white patch that is unique to the fish.

They’re mainly found in cold the salt waters of the North Pacific, North Atlantic oceans, and the Southern Hemisphere. They’re known to be opportunistic hunters and a nuisance for some fishermen because they sometimes steal baits. It predominantly eats small to medium-sized bony fish such as bony fish and 

 

Interesting Facts About the Porbeagle

  • The Porbeagle has a special blood vessel called, rete mirabile, which it uses to keep its body warm from the cold waters where it lives.
  • Porbeagles are considered a delicacy around the world, especially in Asia.
  • No one knows exactly how the name porbeagle came to be for this fish. Some say the name came from its dog-like mentality to fight when caught, hence the name beagle. 

 

Porbeagle Size and Speed

The porbeagle is a large fish. The biggest porbeagle shark is 11.7 feet and its average size is 4.9 to 6.6 feet. The average weight of the porbeagle is 300 lbs, and the heaviest caught was 550 lbs. 

No one knows the exact speed of the porbeagle shark, but scientists assume its speed is as close as its close relative, the mako shark, with speeds reaching up to 20 mph.

 

Distribution and Habitat of the Porbeagle Shark

The porbeagle prefers cold waters in the North Pacific with temperatures of 39.2° to 60.8°F. They mostly stay in the upper pelagic zone with depths of 650 feet (but sometimes they go to depths of  2600 feet). In the U.S., it’s range is from the coasts of New Jersey to South Carolina of the northwestern Atlantic.

They are a migratory species that travel in a longitudinal motion in the northern Atlantic Ocean, from South Carolina to the waters of Greenland. During the day, they’re in the deeper waters and at n