9. SeaExplorer by Alseamar

With its creative glider design, which combines energy-efficient wave propulsion with conventional AUV capability, the SeaExplorer sets itself apart Covering lengths more than 1,000 km, this hybrid method allows missions lasting up to three months. Sophisticated payload bay of the vehicle allows several sensors for oceanographic research, including acoustic monitoring tools and CTD sensors. Its special design makes it perfect for underwater acoustic investigations and studies of marine mammals since it permits almost silent operation.