Huh... my textbook in GCSE geography class (early-to-mid-00s) had an illustration of an ROV-style undersea robot harvesting manganese nodules. I wasn't sure how

Huh... my textbook in GCSE geography class (early-to-mid-00s) had an illustration of an ROV-style undersea robot harvesting manganese nodules. I wasn't sure how that approach would scale...