The oceans contain a myriad of unsolved mysteries, where the oceans can be a frightening place for some people, where the oceans have many dangerous animals such as sharks, sea snakes, and poisonous jellyfish.

Liopleurodon was marine reptile 6-7 meters long and it's weigth was from 1000 to 1700 kilograms.it was from pliosauroide family.it lived in triassik period over 227-206 million years ago.Liopleurodons