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Other
names:
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salmon
shark, herring shark, bonito shark, blue dog, beaumaris shark,
porbeagle shark
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Scientific
name:
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Lamna
nasus
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Genus:
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LAMNIDAE
FAMILY
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It inhabits cool temperate waters of the North Atlantic from South
Carolina to Newfoundland, and from North Africa to Norway and Iceland.
If also inhabits the Mediterranean Sea and the cool temperate waters of
the Southern Pacific.
A pelagic, oceanic shark, it has
nevertheless been found near shore on occasions. It is of the same family
as the great white and the mako sharks and they resemble each other. The
snout is perfectly conical and ends in a point. It is easily distinguished
from other sharks by its teeth, which are smooth and have little cusps
on each side of the base.
It has a small secondary keel that the white and mako sharks lack. The
smaller keel is located beneath the main keel but farther back on the
tail. The first dorsal fin is farther forward than on the mako or white
sharks. Its anal fin is directly beneath the second dorsal fin, whereas
the mako's anal fin originates near the midpoint of the second dorsal
fin. It has a distinguishing white patch on the free-trailing base portion
of the first dorsal fin.
It follows the migrations of mackerels, herring, cod, bonitos, etc., which
is the reason it is often called mackerel shark, bonito shark, herring
shark, etc. It also eats squid, flounder, hake and dogfish. Though anglers
may prefer the mako for its spectacular acrobatics or the white shark
for its great size and strength, the porbeagle is reported to be an excellent
sport fish and may leap when hooked.
The flesh is of good quality and texture and is said to taste somewhat
like swordfish Fishing methods include trolling or bait fishing while
chumming. Baits include mackerel, herring, bonito, squid and other fishes.
The porbeagle inhabits colder waters than its relatives, which may partly
account for the fact that there are no recorded instances of it ever attacking
humans or boats. It is warm-blooded and ovoviviparous, though it has fewer
babies, up to four measuring 19 1/2 in (50 cm) long at birth.
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