It has alot of educational value. If I ever go ocean diving, I'll make sure to bring a small mirror, a whistle, a good knife, shark repellents, a full chainmail suit, a harpoon, two spiked brass knuckles, that emergency radio beacon, a portable water-proof radio, astronaut food for 7 days, water for 7 days and an inflatable boat.
The best of this is that I can reach the bottom of the ocean pretty quick, so more time to look at the nice stuff. Of course, this also means I'll have to bring compressed air and a ballast tank to surface.
Ahh what the heck, screw diving, I'll bring my own submarine!
