- "Morseerians are methane breathers."
- ―Has Obitt
Morseerians were a sentient species native to the planet Merj, that had elongated, conical heads, four arms and a methane-based respiration. The species was not able to distinguish human faces. Shortly before the Battle of Yavin, one such alien, a male named Nabrun Leids, attended the cantina of Mos Eisley the day Obi-Wan Kenobi and Luke Skywalker met Han Solo and Chewbacca.
- Catalyst: A Rogue One Novel
- Star Wars 28
- "Final Round"—Star Wars Rebels Magazine 34
- "The Sand Will Provide"—Star Wars 37
- Guardians of the Whills
- Bounty Hunt
- Star Wars: Episode IV A New Hope (First appearance)
- Star Wars: Heroes Path
- Star Wars 5
- Star Wars 8
- Star Wars 59
- Age of Rebellion - Boba Fett 1
- Star Wars: Commander (Appears in artwork)
- Alphabet Squadron (Mentioned only)
- Force Collector
- Star Wars Resistance – "The Missing Agent"
- Galaxy's Edge 4 (Cover only)
- "Tales from Wild Space: The Blue Brothers"—Star Wars Adventures 13
- (Picture only)
- Star Wars: Absolutely Everything You Need to Know
- The Art of Star Wars: Uprising
- Star Wars: Complete Locations (First identified as Morseerian)
- Star Wars: The Complete Visual Dictionary, New Edition
- Star Wars: Alien Archive
- Disney Gallery: The Mandalorian – "Practical"