How many kinds of sharks are there?

There are 380 kinds of sharks in the world.

There are 380 species of sharks in the world, belonging to 8 orders and 30 families. About 27 species will attack humans, 65,438+02 species may attack humans, and 65,438+02 species may be dangerous because of their size and habits. About 90 species are found in waters near Taiwan Province Province.

Not every kind of shark is streamlined, the body of Pipa snapper is flat, the head of tiger shark is blunt, and the body of bamboo shark is long.

The eight orders of sharks include six branchias, rat sharks, real sharks, tiger sharks, flat sharks, bearded sharks, horned sharks and sawed sharks. Among them, real sharks and horned sharks account for 77% of all species, and real sharks account for 56%.

Shark size:

Sharks are long spindles. Lateral branchial fissure, normal pectoral fin, not healing with anterior snout; Dorsal position of the north fin; Crooked tail type.

80% species of sharks are below 1.6m in length, and most sharks are small fish. The biggest shark is whale shark, also called whale pattern. It is 20m long and weighs 7000-8000kg, so it is the king of fish. The smallest shark is the wide-tailed small horn shark, with mature male fish 15cm and female fish 20cm. The size difference of different kinds of sharks can reach more than 100 times.

At present, a giant man-eating shark has been found, which is a tertiary stratigraphic fossil with a tooth length of 15.24cm and an estimated body length of 90 m. The American Museum of Natural History exhibits this bimaxillary model, which can accommodate six people standing in their mouths.

The above contents refer to Baidu Encyclopedia-Shark.