This document summarizes the major water bodies of Earth. It explains that 3/4 of the Earth's surface is covered by water in various forms called water bodies. The largest water bodies are the five oceans: Pacific, Atlantic, Indian, Arctic, and Antarctic oceans. It also describes seas as large water bodies smaller than oceans, which can be marginal seas partly enclosed by land or inland seas covering central land areas. Minor water bodies include bays, lakes, gulfs, lagoons, straits, and rivers.