Question for Readers

I just got back from a week-long vacation - while at the beach, I saw something that I wish I had investigated further...

A small group in the water was playing with a small toy submarine that was in clear plastic - it appeared to be remotely controlled but it was unusual looking. I really think this item was not made in the USA as it had a distinctly Japanese look to it - not sure how to explain that but it just looked like similar toys from Japan that I've seen.

Anyone seen this? Know where to find one? I've Googled and dug around, but no luck. It was housed in a clear plastic shell (maybe a slight bluish tint to it) and had an external prop for movement and (I think) some sort of piston/hydraulic that pulled in and expelled water from a tank.

I think it would be awesome to have a similar shell built for the NXT... but I now many of us are hesitant to take our bricks anywhere near water.

I'm kicking myself for not swimming over and looking... argh.