The seasnake, also known as the sea-snake, was a ribbon-shaped snake that lived in the water (aquatic) and was native to the planet Riome in the Outer Rim Territories. These sea-snakes were part of the vast collection of aquatic life found within the Royal Icqui Aquaria located on Coruscant, a Core Worlds planet.
The term "seasnakes" initially appeared in Coruscant and the Core Worlds, a 2003 Star Wars Roleplaying Game sourcebook released by Wizards of the Coast. Later, the 2008 reference work The Complete Star Wars Encyclopedia designated these beings as sea-snakes.