[donmoore]

I bought a Russian underwater red laser for a speargun off E-bay a few years ago. Some of the dive shops were advertising them as well. Its power was way to weak to work underwater. I did some research back then and found the green lasers, like Eric was talking about, were several times more powerful. There was one made for a land gun that was waterproof, but waterproof doesn’t mean it would hold up at depth.

It would be interesting to see one that worked. Besides helping you aim, I wonder what the response would be from the fish. They are usually very curious about lights.
don