The winged component of one of the Wave Gliders, tethered to the floating section
It may sound like the premise for the latest Pixar movie, but it’s actually happening – four small autonomous aquatic robots have embarked on a 60,000-kilometer (37,000-mile) journey across the Pacific ocean. The Wave Gliders, built by California-based Liquid Robotics, left San Francisco last Thursday. All four will travel together to Hawaii, at which point they will split into two pairs – one of those pairs will proceed to Australia, with the other heading for Japan. Called PacX (for “Pacific Crossing”), the project will constitute the longest voyage ever completed by an unmanned ocean vessel.