the branch of archaeology that deals with the recovery of ancient objects found beneath the sea, as shipwrecks or remains from submerged islands, and with the techniques of underwater exploration, excavation, and retrieval.
noun 1. a barometer for use on shipboard, especially one mounted on gimbals so as to minimize the effects of the motion of the vessel.
noun 1. .
- Marine biology
noun a branch of marine science involving the study of animals and plants that live in the ocean and the shoreline and how they interact with the environment Usage Note science marine biology The scientific study of organisms living in or dependent on the oceans.
- Marine borer
noun 1. any mollusc or crustacean that lives usually in warm seas and destroys wood by boring into and eating it. The gribble and shipworm are the best known since they penetrate any wood in favourable water See also piddock