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June 11, 2011
1-The Sharks can lose up to 1000 teeth per year. These are constantly replaced throughout their life.
2-The great white shark, star of many films, weighs about 4,000 kg, equivalent to 4 medium-sized cars, and can measure up to 10 m long.
3-The Sharks have a super sense of smell, almost perfect. Chemicals detected in water over long distances, so they can "smell" blood in the water.
4 - Is the cure of cancer in sharks?
This disease takes so long to haunt us could have a possible cure in sharks. Studies indicate that the spiny dogfish (Squalus acanthias) contains a substance that could inhibit tumor growth by cutting the blood supply.
5-The mouth of the whale shark can measure 2 feet wide, although it usually feeds on tiny plankton.
6-When you rub the skin of a shark from the tail to the head is extremely rough, as it is composed of dermal denticles, made of same material as the teeth. Historically, many cultures were using shark skin as sandpaper.
7-The Sharks have the ability to learn behaviors qualified. In the scenario of an aquarium, have been conditioned to respond to colored targets to receive food.
8-Many sharks can see colors. In addition to its superb view, most of them have very acute hearing and smell. They have a unique sensory ability to detect electric currents, using gel-filled pores called ampullae of Lorenzini
9-The spiny dogfish shark is one of the longest-living, reaching between 70 and 100 years old.
10-Sharks have no bones in the body. Their skeletons are made of cartilage.
11-The scales are also highly specialized, are like teeth, with enamel and dentin, which makes them very hard. Instead of being located one above the other as in most fish, sharks are next to each other.
12-Something that characterizes sharks over all fish is its "face." If you notice, most of the fish's mouth in the middle of the tube, without protruding nose. But sharks are the mouth and nose protrusion below which gives that aspect so characteristic.
13-The whale shark is the world's largest fish. Can reach up to 18 m in length.
The title of "man-eater" is headed: the bull shark (Carcharhinus leucas), tiger shark (Galeocerdo cuvieri) and shark (Carcharodon carcharias).
The fastest shark that inhabits the seas is the mako (Isurus oxyrinchus) has shown that it can go faster than 35 km / h
14-The Shark Cigar is the world's smallest. It measures only 50 cm as an adult, it feeds your mouth adhering to the skin of large fish.
15-The curious shape of the hammer head shark is an advantage for this shark, keep your eyes on the ends of the head may have a broad vision.
16-The swim, in that they are also a few specialists. For example the rear fin, if the view is much bigger up side, this allows them to dive at high speed to boot.