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| English | Basque |
| deep sea Region of open ocean beyond the continental shelf | itsas zabal |
| deep sea deposit | itsas zabaleko metaketa |
| deep-sea disposal The disposal of solid waste or sludge by carrying the wastes out to sea, usually in a barge, and dumping into deep water | itsas zabalera isurtze |
| deep sea fishing Fishing in the deepest parts of the sea | alturako arrantza |
| deep sea fishing Fishing in the deepest parts of the sea | itsas zabaleko arrantza |
| deep sea mining The most valuable of the marine mineral resources is petroleum. About 15% of the world's oil is produced offshore, and extraction capabilities are advancing. One of the largest environmental impacts of deep sea mining are discharged sediment plumes which disperse with ocean currents and thus may negatively influence the marine ecosystem. Coal deposits known as extensions of land deposits , are mined under the sea floor in Japan and England | itsas zabaleko meatzaritza |