Everybody knows that as you descend into the water, colors disappear one-by-one until everything in your field of vision has a blue tint. Underwater shooters know that by placing a red filter over the lens of their camera, however, they can add the reds back into their images. So why don't divers place a red filter over their eyes and add the reds back in, too? That's the questions SeaVision asked themselves, and as a result, they've developed a line of color-correcting masks for divers. I've seen these before, and I've always wondered if they worked.

According to Divernet, these rose-colored lenses DO make the undersea environment appear to be more robustly-colored -- sort of. If you're diving in bright light conditions, this mask provides better vision in sunny conditions and "works well at putting the color back into what you see." If, however, you're diving in low-light conditions, the specially-tinted plastic lenses may actually impair your ability to see. SeaVision masks are available for around $100, or about twice that price, if you want prescription lenses inserted.