The white shark or man-eater Carcharodon carcharias
Features: sturdy, rounded body spindle-shaped with relatively short, conical, and blunt snout. Small eyes. Five long Gill slits, all located in front of the pectoral fin. Spiracles tiny. Teeth: teeth similar on both jaws, wide and triangular with the cut edge. Two dorsal fins; first, large and triangular, is a place for the beginning of the pectoral fin, the second fin is much smaller and located directly in front of him, almost equal in size to the anal fin. The rear edge of the large and long, sickle-shaped pectoral fins are located under the first dorsal fin. Caudal peduncle with a single keel on each side. Caudal fin large, Crescent-shaped, the upper and lower blades are almost identical in size. Colouring: the back is often dark gray or blue-gray, sometimes with brownish hues, the underparts from pale grey to whitish, often also pure white. The ends of the fins and the lower edge of the pectoral fins are dark. On axillary parts of the pectoral fins often have black spots. Dinah; 8 m max.
Distribution: widespread in all warm seas, preference is given, however, cooler parts of the sea (Gulf of Maine/USA, coastal waters of California, South Africa, South Australia and Novaezelandiae). Frequently in offshore areas, while more Mature animals in tropical sea areas. In Eastern Atlantic northward to the Bay of Biscay; Mediterranean sea.
Lifestyle: these man-eating sharks operate singly or in small groups in the open sea and near coasts, where they because of their thirst attacks can be dangerous for swimmers and snorkelers. In South African waters sexual maturity occurs in males at 2,75-3 m, and females at 4 m length. Viviparous. Each litter is born up to 30 calves a length of about 36 cm and a weight of approximately 800 g Food: fish (especially other species of sharks, tuna), sea turtles, dolphins, seals, all possible waste entering the sea from ships and through the sewers.