Marine geochemists investigate the chemical composition of seawater and its interaction with the atmosphere and the sea floor. Geophysicists explore the ocean floor and map geologic structures, like undersea volcanoes and mountain chains. They also study the physical and chemical properties of rocks and sediments. Physical oceanographers investigate the physical aspects of the ocean, such as temperature, density, wave motions, tides and currents. Fisheries scientists develop ecologically sound methods of harvesting seafood, study the effects of pollution on underwater plants and animals.
Marine technicians collect and analyze information using instruments and computers.
Marine Parks employ animal handlers, trainers, health care personnel and curators , who design exhibits and procure animals.