People have been traveling over water to get from here to there for thousands of years, but not in these vehicles Long ago, people could only dream of what modern technology would bring. Take a tour of some of the most unique and fascinating watercraft around. Find out how hydroplanes reach astonishing top speeds. Discover what it's like to dive into the ocean depths in a submersible or skim along the surface on an electric surfboard. A world of awesome watercraft awaits.