Sphyrna lewini (Scalloped hammerhead)
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Sphyrna lewini (Scalloped hammerhead) [Illustration
by Ann Hecht ©]
A large hammerhead with a notch at the centre
of head, 1st dorsal moderately high, 2nd dorsal and pelvic fins low.
Colour light grey or bronzy to reddish above, white below, lower
lobe of caudal fin with dark blotch.
To over 3.7 m TL.
East coast, Port St. Johns to Mozambique; circumglobal in all warm
Close inshore, off sandy beaches and in shallow bays,
and well offshore, surface down to at least 275 m.
to 31 young. Off Natal the young form huge schools. Mostly eats
squid and bony fish including elf, maasbanker, sardine, mullet, and
ladyfish, but also takes other sharks, lobsters and shrimp.
Caught by shore and skiboat anglers, and commonly taken by
the Natal shark nets. Often timid when encountered by divers.