Correct Answer : Mining Robot
A seabed mining robot, which was being tested on the Pacific Ocean floor at a depth of more than 4 km has become detached.
Patania II is a 25-tonne mining robot prototype, which was being tested by Global Sea Mineral Resources (GSR), the deep-sea exploratory division of the famous dredging company DEME Group. The robot was meant to collect the nodules rich in cobalt and other battery metals found on the seabed.