Shark

Hi guys, here’s something special about sharks, which is one of deadliest that are roaming on the oceans. Sharks (superorder Selachimorpha) are a type of fish with a full cartilaginous skeleton and a streamlined body. They respire with the use of five to seven gill slits. Sharks have a covering of dermal denticles that protect their skin from damage and parasites and improve fluid dynamics; they also have replaceable teeth. Although generally feared most shark populations have fallen by 90%. Sharks range in size from the small pygmy shark, Euprotomicrus bispinatus, a deep sea species of only 22 centimetres (9 in) in length, to the whale shark, Rhincodon typus, the largest fish, which grows to a length of approximately 12 metres (39 ft) and which, like baleen whales, feeds only on plankton, squid, and small fish through filter feeding. The bull shark, Carcharhinus leucas, is the best known of several species to swim in both salt, freshwater and in deltas.

There are more than 360 described species of sharks split across eight orders of sharks, which are listed below

Hexanchiformes

Squaliformes.

Pristiophoriformes

Squatiniformes

Heterodontiformes

Orectolobiformes

Carcharhiniformes

Lamniformes

It is said that the sharks are feared of dolphins, which saved human beings from sharks during any attacks… But this info is very inconclusive and can’t able to believe.

Major declines in shark stocks have been recorded in recent years - some species have been depleted by over 90% over the past 20-30 years with a population decline of 70% not being unusual. Even though they are deadly, they should be protected, so let’s join our hands to protect them from some anti-socialists...