Deep sea mining is the extraction of minerals from the ocean floor found at depths of 200 metres (660 ft) to 6,500 metres (21,300 ft). As of 2021, the majority of marine mining efforts were limited to shallow coastal waters, where sand, tin and diamonds are more readily accessible. It is a growing subfield of experimental seabed mining. Three types of deep sea mining have generated
Classification of Subsea Mining Units, Equipment and Systems. The key technological challenges to subsea mining include the development of reliable offshore mining
