Most of us have our chosen ways to enjoy the water: power, sail, paddle. But here's one that could bridge the gap between our boating passions: the Waterbird. Also called an Aquabike, it's a simple mechanism that makes it possible to pump your way around a lake—at a surprisingly high rate of speed.

These guys make it look easy, but a different video will show you how it might be your first time. (Good thing she's wearing a lifejacket.)