Discovered during the Great Manifest Period, the ocean world suffered a devastating natural disaster circa 5000 BBY; however, the world's native sapients, the Chuhkyvi, were evacuated by a benevolent alien species to Iskalon before the catastrophe could wipe them out.
Just within the borders of Darth [Revan/Legends|Revan's]] Sith Empire during the Jedi Civil War, Aquaris eventually was left unoccupied and uncontested during the New Sith Wars. Eventually the Galactic Republic laid claims to this area of space, holding onto it throughout the Clone Wars. During the conflict, renegade Kaminoan scientist, Ko Sai, was believed by the Special Operations Brigade to have made a stopover here before continuing on to exile on Dorumaa. After the death of King Alaric the whole sector including this planet, left the Republic and joined the Confederacy of Independent Systems.
During the Galactic Civil War, the Aquaris Freeholders began to seek liberation from the Empire, offering the Alliance to Restore the Republic access to their expansive underwater base. Accessible through a retractable surface landing platform, the Freeholders survived on the planet by piloting submersible aqua-skimmers to hunt the planet's marine wildlife. As members of the Rebel Alliance, many Freeholders left the world to attack the Empire holdings.
Among the most dangerous aquatic creatures in Aquaris' oceans were the enormous demonsquid, which were eight-tentacled mollusks with large jaws beneath a clump of arms. The gnooroop traveled in dense schools that could stretch up to ten kilometers long.
- Republic Commando: True Colors (Mentioned only)
- Traitor's Gambit (First appearance)
- The Night Beast (Mentioned only)
- Luke Skywalker and the Shadows of Mindor (Mentioned only)
- The Essential Guide to Planets and Moons
- Star Wars: Behind the Magic
- "ComicScan: Coming Full Circle"—Star Wars Galaxy Collector 3
- Star Wars Gamer 1
- The Essential Guide to Alien Species
- Geonosis and the Outer Rim Worlds
- The Official Star Wars Fact File 129 (AQU1-2, Aquaris)
- The Official Star Wars Fact File 138 (FYR1-2, Silver Fyre)
- Star Wars Customizable Card Game – Death Star II Limited (Card: Aquaris)
- Star Wars: The Official Figurine Collection 55
- The Complete Star Wars Encyclopedia
- The Essential Atlas
- The Jedi Path: A Manual for Students of the Force
- Star Wars: Edge of the Empire Core Rulebook
- Star Wars: The Card Game – Heroes and Legends (Card: The False Report)
- Star Wars: The Card Game – Heroes and Legends (Card: Aquaris Freeholders)
- Star Wars: The Card Game – Heroes and Legends (Card: Clearing House)