A fun little underwater camera/periscope rig. I’m not sure that I wouldn’t put the camera at the top so that you don’t risk it with the water, but I’m sure the pictures are better from the bottom.
Goes along with the guy’s Underwater Camera Housing on a budget. Fun to play with, and with the availability of cheap digital cameras, might be a good project. I don’t think I would risk my DSLR 🙂