Raxan seaweed constituted a type of seaweed species. The Croke poet Asenec referenced this particular seaweed in The Gleam of Kiirium, his poem which concerned the Tionese tyrant Xim. The poem's narrator, a Duinarbulon Star Lancer, depicted the handle of their lance as being bound with this specific plant.
Originally, Raxan seaweed was intended to appear within The Essential Guide to Warfare, a sourcebook authored by Jason Fry and Paul R. Urquhart that was released in 2012; however, it was removed before the final version was published. The portion that featured Raxan seaweed was subsequently made available as part of Star Wars: The Essential Guide to Warfare Author's Cut, a collection of pieces that were posted on the StarWars.com blog beginning in 2013.