What is another word for sub-aqua?
Pronunciation: [sˈʌbˈakwə] (IPA) 
Sub-aqua refers to anything related to underwater or below the surface of water. There are a few synonyms that can be used interchangeably with this term. For instance, the word 'submarine' is a perfect synonym since it also means something that operates underwater. 'Aquatic' could also serve as a substitute, as it describes any organism or object that is connected to water, including both the surface and the depths. 'Marine' is a synonym that is often used in reference to oceanic activities, like marine biology. Finally, 'submersible' is another alternative that could be used in place of sub-aqua, as it describes anything capable of being submerged below the water's surface without sinking.
