[wet]

How about an aqueon with clear components (where possible and applicable), say transparent-invisible acrylic/polycarbonate wings?

Wouldn't it give the effect of dolphin-like swimming, when going through the water at high speed, might make a great video.

I dunno if the strength, weight, flexibility could be made practical, but I like the concept lots.

Curious, wonder if the wings could be made swept-back or variable, for speed changes and less drag... When I first saw the aqueon, I felt that the wings were sticking out too far on the sides, and this would mean more work required at higher speeds.

Very interesting !