Impossible Metals Tests Autonomous Seabed Robot at More Than 4,000 Metres
US underwater robotics company Impossible Metals announced on 9 November 2026 that its Eureka autonomous collection system had retrieved approximately 450 grams of polymetallic nodules from the seafloor at a depth exceeding 4,000 metres during a September scientific expedition. The company says the robot navigated to the seabed, selected material…