A sea's a large body of water Sea may also refer to Sea (advert), an advertising campaign in 2007 to promote Smirnoff Sea, Somerset, a small village in South Somerset, England SS Sea, an American steamship The three-letter acronym SEA may refer to: Organizations and businesses Scientists and Engineers for America, a pro-science political advocacy group Sea Education Association, ocean science and sailing program, also known as SEA Semester Service des essences des armées, French army… (More on Sea)