Lamna nasus (Porbeagle shark)
(Bonnaterre, 1788)
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Lamnidae
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Lamna nasus (Porbeagle shark) [Illustration
by Ann Hecht ©] |
Identification
A stout, spindle-shaped shark with large black
eyes, a sharp conical snout, and small, smooth-edged, narrow cusped
teeth with side cusps. Colour dark blue-grey or grey-black above,
white below, with rear tip of 1st dorsal abruptly white.
Size
To 3
m TL.
Range
West coast off Cape Town, possibly off Knysna; most
cold seas except North Pacific.
Habitat
Oceanic and close inshore,
prefers cold water less than 18° C, ranging from the surface down to
366 m.
Biology
Rare in the area. Bears 1 to 5 young. Feeds on small
schooling fish, dogfish sharks, soupfin sharks, and squid.
Human Impact
None in the area. Text by Leonard J.V. Compagno, David A. Ebert
and Malcolm J. Smale |