Sharks

* cartilage instead of bones
* can only swim forward
* breathes through little slits in the side of the shark's body that are called  gill slits
* eggs are fertilized in the female'sbody
* the body is covered rough sandpaper like scales that are called denticles.
* large oily liver
* cold blooded
The great white shark, Carcharodon carcharias, also known as greatwhite, white pointer, white shark, or white death, is a large lamniform shark found in coastal surface waters in all major oceans. The great white shark is very well known for its size, with thelargest individuals known to have approached or exceeded 6 metres (20 ft) in length[3] and 2,268 kilograms (5,000 lb) in weight.[4] It reaches maturity at around 15 years of age and can have a life span ofover 30 years. The great white shark is arguably the world's largest known extant macropredatory fish and is one of the primary predators of marine mammals. It is also known to prey upon a variety ofother marine animals including fish, pinnipeds, and seabirds. It is the only surviving species of its genus, Carcharodon
The great white shark has a robust large conical snout. The upper and lowerlobes on the tail fin are approximately the same size (like some mackerel sharks).
Great whites display countershading, having a white underside and a grey dorsal area (sometimes in a brown or blueshade) that gives an overall "mottled" appearance. The coloration makes it difficult for prey to spot the shark because it breaks up the shark's outline when seen from the side. From above, the darkershade blends with the sea and from below it exposes a minimal silhouette against the sunlight.
Great white sharks, like many other sharks, have rows of serrated teeth behind the main ones, ready toreplace any that break off. When the shark bites it shakes its head side to side, helping the teeth saw off large chunks of flesh.

Little is known about great white shark behaviour in the way of...