Does this look like fun, or what? Submarines are capturing the attention of the hyper-rich, and now Netherlands-based U-boat Worx joins the fun with its single-occupancy CQ1 and the CQ2 for two. These electric boats can dive to 150 feet, and can run 2.5 hours on a charge.
You can equip them with extra batteries, sonar, halogen lighting and a whole lot more. Looks like almost as much fun as diving, and you don't even have to get wet.