French company Seabike has developed a swimming device that uses your own leg power to accelerate you through the water at superhuman speeds. This crank-driven pusher prop looks a bit like an underwater unicycle... We'd love to take one for a spin!
Some videos in the article show a guy cruising while barely using his arms, and then SCUBA divers only pedaling with their feet but they were pedaling slower
Some videos in the article show a guy cruising while barely using his arms, and then SCUBA divers only pedaling with their feet but they were pedaling slower