What is lochness monster?

A loch ness monster is a creature which has been claimed to be seen throughout the world. By many reportings it has flippers, and a long neck. One reporting has been ruled fake. The man who reported it had a toy submarine and put a fake neck on it. The name originated from where it was supposeively first sawn, in the lake Loch Ness. This is in my own Words. Not from a website.