Swimming away from hungry sharks and through heavy currents is a lot of work and who wants to do that on your time off? An Italian Company called Euroship solved this problem by creating the Magic Swim ($2,500), a semi rigid 5 person pool that you attach to your boat. The floating pool consists of inflatable tubes surrounding a rounded PVC bottom, and connected to the boat by 4 easily mountable attachment points. Overall it takes less than 5 minutes to inflate the pool and water is able to enter the pool though a few specifically situated holes. Surprising, the bottom of the pool is semi rigid and opaque to keep you hidden from all those water baddies. When not being used, the pool fits into a large duffel bag that can be easily stored on the boat.