COSEWIC Status Reports

COSEWIC Assessment and Status Report on the Porbeagle Shark Lamna nasus in Canada

Porbeagle (Lamna nasus) is one of five species belonging to the family Lamnidae, referred to as the mackerel sharks. In French, it is called maraîche. It is dark bluish grey on its dorsal side and white on its ventral side, and the free rear tip of its first dorsal fin is white, with margins that are unique to each individual. It grows to a maximum length of approximately 350 cm. It is the only representative of its genus in the Northwest Atlantic Ocean, where it occurs in a single population. It undertakes long-distance, seasonal migrations along the east coast of Canada and United States each year. There is no indication of mixing between the Northwest and Northeast populations of Porbeagle in the Atlantic. In this report, Porbeagle in the Northwest Atlantic is considered as one designatable unit. Porbeagle meat is among the most valued of shark meats.

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COSEWIC Secretariat
c/o Canadian Wildlife Service
Environment Canada
Ottawa, ON
K1A 0H3
Tel: 819-938-4125
Fax: 819-938-3984
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