This story reminded me of a case of a 25 tonne deep sea mining robot that got detached at a depth of 4km: https://www.reuters.com/business/environment/mining-ro

This story reminded me of a case of a 25 tonne deep sea mining robot that got detached at a depth of 4km: https://www.reuters.com/business/environment/mining-robot-stranded-pacific-ocean-floor-deep-sea-mining-trial-2021-04-28/ https://www.reuters.com/business/environment/mining-robot-st... . I can't imagine how stressful this must have been for everyone involved. Fortunately the robot was recovered shortly after this incident.