The Geonosian hydras were enormous, carnivorous insectoid beings, characterized by their three heads; however, some individual hydras possessed a greater number, which was not regarded as a mutation. These hydras were amphibious, inhabiting the limited seas of Geonosis, such as the Ebon Sea.
Geonosian hydras hunted for sustenance, targeting the more vulnerable Geonosian hives. These creatures were occasionally featured as the centerpiece attraction in Geonosian gladiatorial combat, where they would battle against numerous armed gladiators.
An exoskeleton from a Geonosian hydra was exhibited within the Royal Icqui Aquaria, a sizable public aquarium located on the planet of Coruscant.
- Coruscant and the Core Worlds
- The Official Star Wars Fact File 108 (GEO 21-22: Geonosis – Landscape)
- Geonosis and the Outer Rim Worlds (As hydra worm)
- Ultimate Adversaries
- The Complete Star Wars Encyclopedia
- Drawing from the Imagination: Mythological Creatures in Star Wars, Part 2 on StarWars.com (article) (content now obsolete; backup link)