The term "Superocean" refers to a vast ocean that covers a significant portion of a planet's surface. In the context of Earth, it is often used to describe the combined area of all oceans, which together make up about 71% of the planet's surface. This includes the Atlantic Ocean, Pacific Ocean, Indian Ocean, Southern Ocean, and Arctic Ocean. In planetary science, "Superocean" can also refer to hypothetical oceans on other celestial bodies, such as Europa, a moon of Jupiter, which is believed to have a subsurface ocean beneath its icy crust. These superoceans may play a crucial role in the search for extraterrestrial life.