Sharks are one of three groupâ€™s cartilaginous fish, with more than 500 known species.Â They live mainly in the sea, but a few species also have periods in fresh water.Â Typical of sharks is that they lack a swim bladder but instead have other solutions for buoyancy.Â Among other things, they have a large oil-filled liver and a lightweight skeleton in the form of cartilage.Â Despite this fall, most sharks if they stop swimming, and shark that live where the water depth is large swimming because the whole time.Â Some shark species are also obliged to constantly swim in order to breathe;Â these are called obligate ramventilerare.Â More than 200 species of shark are totally benthic while more than 200 species live both on ground and in the open water and only 25 species living only in open water.Â To dive among different types of sharks is a popular phenomenon, and therefore we offer here at ten facts you should know!
Top 10 Facts about Shark you probably did not Know
01. Â The average sharks has betweenÂ 40-45 teethÂ and can have up to seven lines.Â A sharkÂ losesÂ very easy one tooth, but theyÂ growÂ well out new as fast with the sharks.Â On average, a sharks through the approximatelyÂ 30,000 teethÂ in its lifetime.Â Good thing they do not have dental expenses anyway!
02. Â A shark is not a singleÂ boneÂ in his body.Â Their skeleton comprises onlyÂ cartilage.
03. Â ApproximatelyÂ 30 peopleÂ are killed annually in shark attacks worldwide.Â That means there is a greater risk of dying from aÂ wasp sting, or thatÂ lightningÂ would strike down the middle of your head.Â For every person who dies of a shark, die aboutÂ two millionÂ sharks.
04. Â Hammerhead sharkÂ Â (see picture below) has been known for its hammer-like appearance of the face.Â When hammerhead sharksÂ are bornÂ are their heads, however, anyÂ softÂ , precisely because they do not damage the mother’sÂ birth canalsÂ for redemption.
05. On theirÂ 18 centimetersÂ isÂ dvÃ¤rgkÃ¤xanÂ the smallest shark we have in our seas.Â The opposite of the smallest isÂ the whale sharkÂ , which can grow toÂ 15 meters longÂ and weigh the wholeÂ 1 800 kgÂ Â – and in some cases even more!
06. Researchers are studyingÂ shark cartilageÂ as far on possible cures forÂ cancer, because sharks rarely ever develop cancer.
07. Â A little less known fact about sharks is that they have a greatÂ ear.Â Some sharks canÂ hearÂ their prey from up toÂ a kilometerÂ away.
08. Jaws is one of the few animals that survivedÂ dinosaur time, together with the crocodile with more.Â What is perhapsÂ less knownÂ by us humans is that sharks already existedÂ 200 million yearsÂ before the dinosaurs, making it one of theÂ oldestÂ water-based species we have here on earth.Â Their change in appearance has also beenÂ minimalÂ during all the years.
09. Â Although it is fairly evenly divided between men and women when it comes to bathing and swimming in the sea, areÂ the menÂ for aboutÂ 90%Â of all shark attacks directed against us humans.
10. Â Shoes, chairs, boxes of nails, drum kits, full bottles of wine, and the back half of a horse are justÂ a fewÂ of the manyÂ bizarreÂ objects found in the stomachs of sharks over the years.