The marsune refers to a long-extinct colossal creature, a species that once inhabited the aquatic environments underwater of the Mid Rim planet Naboo. Additionally, "Marsune" served as a family name within the Gungan population of Naboo.
The marsune received a mention within the pages of the Galactic Campaign Guide, a reference book from 2003. This book, intended for the Star Wars Roleplaying Game, was authored by Peter M. Schweighofer and J.D. Wiker, and brought to publication by Wizards of the Coast.