Great White Shark

Great White Sharks South Africa

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Great white sharks in South Africa
Great White Shark
GREAT WHITE SHARK – Carcharodon carcharias. Great white shark identification: Great white sharks are unmistakable. When you see one you’ll really know it. No other shark has such a powerful submarine presence. Sleek, silent (no jaws soundtrack) and unquestionably in charge, the white sharks only predators are man and orcas. Great white sharks are believed attain 7m in length and weigh over 1800 kg. The body of the white shark is robust and torpedo shaped, generally charcoal black to dark grey-brown on the upper half in distinct contrast to the white underbelly. The pectoral fins are long and large with black tips on the underside. The dorsal fin is prominent and the archetypal shark-fin shape. The caudal fin (tail) is one of the best means of identification, being sickle shaped and almost symmetrical – the only other shark in our waters with a similar tail is the shortfin mako (Isurus oxyrinchus). The toothy smile of the great white holds many large, triangular teeth with pronounced serrations on both upper and lower jaws. Other names – Blue Pointer and Tommy shark – a grizzly reference to the fate of many British soldiers who went down with the HMS Birkenhead in 1852 near Gansbaai.
Great White Shark South Africa
Blue Pointer

Great white shark biology: Great white sharks are thought to be sexually mature at about 3m for males (8 years) and 3.5m for females (12-13 yrs).  The gestation period is thought to be between 14 to 18 months, and between 2 and 10 juveniles are born live at around 1.3m in length. The life span of the great white shark is thought to be 30-40 years, although recent studies using radiocarbon analysis have determined age estimates of up to 73 years, showing the species to be even more vulnerable than previously thought. Recent estimates from a study by Sara Andreotti would seem to support this, suggesting there are less than 600 great white sharks that visit the country’s southwest coastline between Port Nolloth and Port Elizabeth. Globally the numbers of great white sharks are thought to have dropped by nearly 80 percent in the 20 years between 1986 and 2006.

Shark Cage Diving
Diving with White Sharks
Great white shark behavior: Great white sharks feed on other sharks, seals, bony fish, turtles, large rays and dolphins, they are also known to scavenge on dead whale carcasses. Surprisingly, some research indicates that seals may only comprise 20% of the diet. Great white sharks are without doubt the most globally feared of all shark species, however they may often be wrongly implicated in attacks on humans – especially in warmer waters where Zambezi (bull) and tiger sharks are also possible culprits. Great white sharks can be found in all temperate and tropical waters worldwide. Often sighted close inshore, the larger sharks will seasonally congregate around seal colonies between extensive migrations. In February 2004 a tagged female white shark of 4m, named Nicole, surprised everyone with a transoceanic migration of over 11 000 km from South Africa to W. Australia. Nicole then completed the round trip in just over nine months when she was sighted again off Dyer Island, South Africa, in August 2004. Sightings of great white sharks in open waters off South Africa are rare, however a booming cage diving industry has developed around the seal colonies of Cape Town, Mossel Bay and Gansbaai.

Shark Identification South Africa

What shark did we see?

When trying to identify any wild animals, colour is usually the least important feature. When it comes to identifying sharks try get a good look at the tail and any obvious markings – spots patterns and dark tips on the fins are always useful. Combine this with the size and location of fins and you should be getting pretty close to pinning down the family – if not the species -good luck!

Blue Sharks South Africa
Sharks of South Africa

Blue Shark

BLUE SHARK – Prionace glauca. Identification: The blue shark is a slender, elongate shark that may attain a length of 3.8 m. The body of the blue shark is

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Tiger Sharks South Africa
Oceans Africa News

Tiger Shark

TIGER SHARK – Galeocerdo cuvier. Identification: Another unmistakable submarine presence, tiger sharks are thought attain 7m in length, however sightings

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Ragged toothed shark South Africa
Sharks of South Africa

Ragged Toothed Shark

SPOTTED RAGGED TOOTHED SHARK – Charcharius taurus. Identification: Ragged toothed sharks are perhaps South Africa’s best loved sharks. Affectionately known

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This text has been compiled from several different sources, personal observations and anecdotes. It is intended to serve as a popular guide only. While every effort has been made to keep the information accurate and updated, it should not be seen in any way as a scientific text or reference.

Copyright: Oceans Africa 2012       Original artwork: Graeme S. Grant

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