You are so right Damp. We have only seen a tiny part of the Earth's oceans. There is so much we could learn from them. As I said, I love space travel and have learned a lot, but in the overall scheme of things, I think the oceans could probably do us a lot more good right now. What can we learn from them? TONS!!! It is really just as challenging as space travel too, considering there are lots of places in the ocean that we cannot get to. But if you tell enough people they can't, someone is going to figure out a way to say "I can, and I did." I believe a "few" people in the past have been told "you can't," such as the Wright Brothers, Thomas Edison, Leonardo di Vinci, Gallileo, and probably the first person to stick a wheel on a cart.