The Evolution Of Shark

What you need to know about the evolution of shark.

Carcharodon carcharias, is best known as the great white shark is one of the most feared creatures on earth. Long sharks have been feared and admired throughout history. We wrote the books on the cinema, and both tried to kill the shark and saved in recent years.

But when the shark is coming? Some people believe that sharks are fish.

While sharks are related to fish, is very distant in relation to the branching out of millions of years ago. Four million years ago, when the Devonian era, was a lot of fish, such as bony fish, bathing waters. Finally, new species evolved Chondrichthyes. Over time it developed into the species we know as the sharks and rays.

The oldest known shark Megalodon is a, or "Big Tooth." This was an old fossilized shark whose teeth have been found in many parts of the world. They are there 18 million years ago, at the same time, which is known as the Miocene period. I will give you an example of how large, can open their jaws to seven meters high and six feet wide and your body may be increased to 100 meters long! They could easily swallow a person whole.

Therefore, the sharks are really as dangerous as believed to be? There are many debates on this topic. Some people want to destroy all species of shark, while others want to save and preserve it. Although a great white shark is one of the most feared is the reality in a few reports of fatalities from shark attacks each year. So what is myth and what is in fact the shark?

Mito-Shark Attack error because people are seals.

It is very studied, and investigators have reason to believe that sharks can be dismissed. Their behavior when attacked by a seal of humans against attack is different. So why sharks attack? We can not say for sure, but when you think about it, they are "their" turf industry work makes us fair game.

Mito-Sharks have poor eyesight.

This is also true. So as not to confuse the people of the stamps are a very good eye sight. It is true, however, that sharks are the smell and taste amazing that they can use their teeth to investigate the matter. This may be a white shark landed people still swim away after.

Mito-sharks can not survive in freshwater.

Although rare, there is a certain kind of shark that can survive a short period of time in freshwater.

What is the best way to avoid a shark attack? There are some fairly simple steps that most visitors to the beach are recommended. A swim in a group, keep the sun off the water at night and early morning (this is where the sharks like to feed), are out of the water if bleeding and finally, if you see a shark, stay away !