Lion of the ocean

Shark_Eye

Sharks, like lions, weed out the sick and slow fish to keep the population strong. They also scavenge on the bottom of the ocean any carcasses that settle there. The attacks on humans are more likely the shark “tasting” to see if the movement is a fish. When the shark realizes that the human is not its prey, they move away. Sharks are a group of fish. They are found in all seas and are common to depths of 2,000 metres (6,600 ft).sharks have diversified into over 505 species. They range in size from the small dwarf lanternshark (Etmopterus perryi), a deep sea species of only 17 centimetres (6.7 in) in length, to the whale shark (Rhincodon typus), the largest fish in the world, which reaches approximately 12 metres (39 ft) in length. Well-known species such as the great white shark, tiger shark, blue shark, mako shark, and the hammerhead shark. sharks are "cold-blooded" or, more precisely, poikilothermic, meaning that their internal body temperature matches that of their ambient environment. One important feature of sharks is that they are made up of cartilage not bone. There has been research done on shark cartilage to see if it has any cure properties as sharks do not get cancer.Most sharks give birth to live young. The young develop inside the eggs, hatch, and leave behind an empty egg.There are species of sharks that give birth to live sharks called pups.

There are three ways in which sharks reproduce and give birth to new pups.

Viviparity:They only have a few at a time and they abandon them after delivery. Baby sharks instinctively know how to survive immediately. The mother shark goes on about her business without giving them a second thought. Shark mothers do not take care of their young.

Oviparity:Other species of sharks will lay eggs in a well hidden area. The eggs are in a protective case that makes it difficult for predators to get to them even if they do find them. Since sharks don’t have very many enemies even the little ones are often able to survive at a very high rate.

Ovoviviparity:Most sharks use this method of reproduction. The eggs hatch inside the mother and they continue to be nourished by the yolk of the egg and some fluids from the mother. The young born alive and fully functional.

Some species practice a form of cannibalism known as oophagy, which means that they will eat the remaining eggs that have not hatched in order to grow and survive. Sharks can live around 25 years in captivity.