The Subwing is a cross between a wakeboard and a hang glider.
If you’re not sold by that description, this isn’t the extreme toy for you.
The Subwing attaches to the rear of a boat by rope (15 meter minimum recommended), just like a wakeboard or waterski line. The rider lies facedown in the water and grips the Subwing by its two wings, tilting them to up/down and sideways movements, as well as barrel rolls. It’s like flying, only you’re wearing a diving mask and moving along beneath the waves.
The Subwing is available in fiber glass ($700), carbon matte ($850), and carbon glossy ($895). You can also buy a separate GoPro mount for it if you would like to take video as you soar down to the ocean floor.