Carcharias Shark
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Sand Tiger Shark (Carcharias taurus)
Facts about Shark Cage Diving Accommodation in South Africa
The white shark tops the killer whale as the world's apex predator.
White sharks are intelligent and natural learners, but they cannot be trained by human contact. Scientific name: Carcharodon carcharias
Sharks eat other fish, seals, sharks etc. and attack them
from below, letting them bleed to death
Sharks only attack people when they mistake them for
prey – that is why they usually leave the victim after biting them and on realising the mistake
The white shark has highly developed senses:
• It can smell one part of fish to several million parts of water.
• Its electromagnetic receptors (ampulae of lorenzini) can detect several billionths of a volt of electricity.
• Its lateral lines, from the nose to the tail, can detect minute molecular pressure changes in water density up to 100 meters away.
The world's largest concentrations of white sharks are found in temperate regions where water temperatures range between 10 and 20°C.
The white shark is a trans-oceanic migrator and has the longest migratory range of any marine creature on record. A female white shark travelled a distance of 20 000km from Dyer Island (South Africa) to western Australian and back in just under nine months.
The white shark is the only shark species that will readily examine objects above the surface by lifting its head out of the water.
The white shark has a central blue pupil surrounded by a predominately black eye, contradicting popular belief that the eye of the great white is black and lifeless.
The white shark is semi warm-blooded and has an extremely complex heat exchange system which helps propel the shark to speeds of over 35-40mph in short bursts.
The white shark regulates its body temperature at a constant 25°C regardless of the surrounding water temperature.
The white shark is a macro-predator. That means it will prey on anything the same size as itself or smaller.
The white shark is also a scavenger and will readily take secondary prey, for example trash, handouts, and off fishing lines.
The white shark cannot produce body fat and is composed of skin, muscle, and cartilage.
The liver of the white shark is a huge source of energy and can weigh up to 30% of its total body weight.
The jaw of the white shark is not fully attached to the skull and is highly flexible. It is the most efficient cutting instrument of any living creature.
UNCHALLENGED MASTERS OF ALL THEY SURVEY'
The Great White Shark is one of the ocean's most ferocious predators – yet it is an extremely vulnerable species that has almost been hunted into extinction, thanks to negative publicity and hyped Hollywood movies like JAWS.
Only about 30% of people bitten by sharks die – usually due to loss of blood or victims drowning before rescue teams arrive
Most shark attacks are on surfers – who resemble the shape of seals from below
It gets its name from its white belly
One great white shark weighs around 1 200kg
Females are bigger than males
They have up to 3 000 teeth
Great white sharks are now a protected species in several countries – including South Africa. One reason for their low numbers worldwide, is that they are extremely slow to reproduce.
Females take up to 15 years to mature and have only a couple of pups in their lifetime.
They are found in most parts of the world and in South Africa – one favourite hot spot is False Bay, near Cape Town – especially during the winter months (May-October), when the water is warmer due to the direction of the currents flowing at that time of the year.
About the Author
Shark diving accommodation South Africa - A selection of White Shark Cage diving tours and packages in Gansbaai as well as comfortable venues in which to stay while you are visiting South Africa.
