What is another word for the hydrosphere?
Pronunciation: [ðə hˈa͡ɪdɹəsfˌi͡ə] (IPA) 
The hydrosphere refers to the part of the Earth's surface that is covered by water. Synonyms for the hydrosphere include the marine environment, aquatic environment, the aquatic sphere, and water world. These terms all refer to the vast expanse of oceans, rivers, lakes, and other bodies of water that make up the majority of the Earth's surface. The hydrosphere is a critical component of the planet's ecosystem, providing homes for countless species of aquatic plants and animals as well as important functions such as regulating the Earth's climate and oxygen levels. Understanding the hydrosphere and its various synonyms is an important step in appreciating the vital role of water in our world.
