Deep-sea deposits -- See Marine sediments Here are entered works on the accumulated minerals and organic remains on the present ocean floor. Works on the unconsolidated mineral and organic sediments of the present land masses are entered under Sediments (Geology).
Deep-sea diving -- See Deep diving Here are entered works on swimming underwater using equipment. Works on plunging into a swimming pool or other body of water, often while executing acrobatic stunts, are entered under Diving.
Deep-sea engineering -- See Ocean engineering Here are entered works on the engineering aspects of equipment and techniques facilitating operations beneath the surface of the ocean in order to exploit its resources. General works on the application of engineering to ships and their machinery are entered under Marine engineering.