Carcharhinus obscurus (Dusky shark)
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Carcharhinus obscurus (Dusky shark) [Illustration
by Ann Hecht ©]
A large grey to bronzy shark with a broadly
rounded snout, triangular saw-edged upper teeth, curved
moderate-sized pectoral fins, an interdorsal ridge, and dusky fin
tips. Underside white, fins not boldly marked.
To 4.2 m.
East and southwest coast, False Bay to Mozambique; virtually circumtropical.
Shore to 400 m depth, coastal and well
offshore, not oceanic.
Bears 3 to 14 young. Pups off Natal,
with nursery grounds off Natal and the eastern Cape. Feeds on
pelagic and bottom fish including sardines, mackerel, tuna, soles, rockcods, elf, grunters, seabream, cutlassfish, kob, also other
sharks (including its own species), skates and rays, cephalopods,
gastropods, lobsters, and occasionally mammalian carrion and
inedible objects. Follows sardine shoals seasonally up and down the
Potentially dangerous, but not indicted in
shark attacks here. Commonly caught by anglers and in the Natal