underwater propulsion device Üzerinde Buzz söylenti
The Yamaha RDS300 Seascooter occupies a niche where it’s too pricey for casual users, but not cutting-edge enough for serious divers.The reliance on human locomotion, even with the strongest swimmers, has several drawbacks. For one thing, humans swim pretty slowly. We also burn quite a lot of energy doing it and, since your oxygen supply is limit