An someone who studies the ocean is known as an oceanographer. Oceanography is the scientific study of all aspects of the oceans and seas of the Earth. According to Encyclopaedia Britannica, this comprises their physical and chemical qualities, their genesis and geologic structure, and the biological forms that occupy the marine environment.
Physical oceanography, chemical oceanography, marine geology, and marine ecology are the four distinct but interrelated sub-disciplines of oceanography. Physical oceanography is the study of the properties of seawater, its movement, and its interactions with the atmosphere. Chemical oceanography is the study of seawater’s composition and the biogeochemical processes that effect it. Marine geology is the study of the structure, characteristics, and evolution of ocean basins. In addition to being known as biological oceanography, marine ecology involves the study of sea plants and animals, including their life cycles and food production.