Nikonos IVa Underwater 35mm camera plus..

Works great, just shot a roll in the pool, stock 28mm Nikkor lens. No water ingress, but buy new O rings (2) for the 100ft ocean dive. $50 shipped. Food for thought: Scan your 35mm prints at development time onto a picture disc and have ~40Mb resolution that a digital camera can only dream of. Plus you wont flood your $800 Nikon D300 in that ziplock bag they sell. Also have big 6XAA cell underwater strobe w/Nikon 3 prong plug and mounting brackets for another $60, tested good sync with Nikonos.