The term waterborne refers to something that is transported by or takes place in water. There are several synonyms for this term that can be used in different contexts. A word that can be used as an alternative to waterborne is aquatic, which pertains to water environments and ecosystems. Another synonym is marine, which refers specifically to oceans and related phenomena. If the context involves water transportation, the word nautical can be used instead. Similarly, the word fluvial pertains to rivers and streams. Lastly, the term hydrous can also be used to refer to something waterborne, emphasizing the importance of water in the substance or process being discussed.