As the in-game description says, Whirlitzers are the only ooblets known to be capable of flight, although not a whole lot of flight as they seem to just hover. Whirlitzer is a flying acorn-like Ooblet found in Badgetown after unlocking Even More Ooblets III through the Wishy Well. Whirlitzer also has its own game in Port Forward, where you play as a Whirlitzer and avoid obstacles and get food. The common Whirlitzer is green, while the gleamy one is orange. You can notice that in our fanart Ooblets Whirlitzer and Gleamy Whirlitzer cursor pack.