SpeciesGreat White Shark
Vulnerable

Great White Shark

Carcharodon carcharias

About the Great White Shark

The great white shark (Carcharodon carcharias) is the largest predatory fish on Earth, reaching lengths of up to 6 meters and weights exceeding 2,000 kilograms in the largest recorded individuals. It is found in cool, coastal and offshore waters across all major oceans, with notable concentrations around South Africa, southern Australia, and the central California coast. As an apex predator, it regulates the populations of marine mammals, large fish, and sea turtles, and its removal from a food web triggers measurable cascading effects on species several trophic levels below it.

The IUCN Red List classifies the great white shark as Vulnerable, with population trends that remain difficult to quantify precisely due to the species' wide range and low detection rates. The primary threats are incidental capture in commercial longline and gillnet fisheries, targeted fishing for fins and jaws, and the slow reproductive rate that limits population recovery -- females are believed to reach sexual maturity at around 33 years of age and produce relatively small litters after a gestation period estimated at 12 months or longer. Habitat use near coastlines also brings great whites into frequent contact with recreational and commercial fishing gear, compounding pressure on a species that may number only in the low thousands globally.

Things worth knowing

  • Great white sharks are warm-blooded relative to most fish, using a heat-exchange system called regional endothermy to keep their core muscles and brain warmer than the surrounding water.
  • Genetic studies have shown that the global great white shark population is divided into distinct subpopulations, with very limited interbreeding between the Atlantic and Indo-Pacific groups.
  • The species has one of the lowest reproductive rates of any shark: females give birth to litters of two to ten pups, and may reproduce only once every two to three years.
  • Great white sharks are known to make transoceanic migrations, with one tagged female traveling from South Africa to the waters off Western Australia and back -- a round trip of nearly 20,000 kilometers -- in under nine months.
  • Tooth serrations in Carcharodon carcharias are finely adapted for cutting through the blubber and bone of marine mammals, a dietary specialization that distinguishes adults from juveniles, which feed primarily on fish.
  • South Africa's Gansbaai region has experienced localized disappearances of great white sharks in recent years, which researchers have linked in part to predation pressure from orca (Orcinus orca) individuals that have learned to extract and consume shark livers.
Who protects them

0 organizations protect the Great White Shark

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