Now then, millions of years ago we climbed out of the sea and then we were getting eaten on the land and the sea so we grew into little monkeys and lived in trees, we were still getting eaten so we used our advanced brains to make fire and weapons,then as we progressed even further we invented gunpowder and better weapons, this made sure that we have stayed at the top of the food chain, unfortunately guns don't work underwater and so the big fishes with the big teeth are still top of the food cahin in the seas, that is why we shouldn't go back there, and because we can't breathe underwater. hih.