Great waters is a term used to describe large bodies of water such as oceans, seas, and lakes. However, there are various synonyms that people can use to describe these vast water bodies. For instance, words like vast, immense, and expansive are synonymous with great waters. Waters can also be described as extensive, boundless, and infinite. Other synonymous terms include deep, broad, and profound. In addition, people can use terms like oceanic, pelagic, and marine to describe great waters that are related to the sea. No matter the term used, one thing is certain- great waters are a fundamental and essential aspect of our planet's ecosystem.