Inventor: Force Fin
Scuba divers have always had a soft spot for high-tech accessories. Take, for example, these bizarre-looking fins, designed to let divers fine-tune the position and even the flexibility of their blades. The Oscillating Propulsion System, above right, whips through water like an eel; a little weight inside the tip helps build momentum so you can cover long distances faster without working too hard. The Twin Foils are better for maneuvering in tight spots, reducing the chance that you'll kick the coral. The two fins share a common foot pocket, so you can quickly swap one for the other.
Availability: Now; $135 for a pair of foot pockets; $150 to $220 for a set of bladesTo Learn More: forcefin.com