With an underwater drone you can explore lakes and oceans like never before. You can use them for leisure, research, fish finding, hull inspection, treasure hunting, and more — all without getting your feet wet.We’ve been investigating their capabilities to help you find the right model for your needs. We’ve put together a concise guide, and we’ve also made a few recommendations. Our favorite, the Geneinno Titan, is a remarkable vehicle offering tremendous control and high-resolution imagery and is cap