Submersibles sent to recover an ROV (Remotely Operated Vehicle) lost off the coast of the tiny island of Alphonse Seychelles, Wednesday March 13, 2019. The previous day, an accident severed the cable connecting the drone to the mother-ship of the British-based Nekton mission. The camera-carrying ROV is a vital image-gathering tool that can go deeper than the submersibles. (AP Photo/David Keyton)
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