Wednesday, April 13, 2011

Shark, amazing fish that have existed since before dinosaurs were.


White Shark Is the one of dangerous shark

Sharks are amazing fish that have existed since before dinosaurs were. They live in thewaters around the world in every ocean, and even in some lakes and rivers.


Unlike bony fish Sharks have no bones, their skeletons made ​​of cartilage, a tough,fibrous substance, produced not nearly as hard as bone wird.Haie have no swimbladder (unlike bony fish).




No comments:

Post a Comment

Share |

Popular Posts