Motile macroscopic organisms not observed flying

Many motile macroscopic organisms have appendages of some sort-- legs, tentacles, or fins-- which may or may not be used for locomotion. However, there are several that don't have any appendages at all, but still find their way around. The tumbleweed is a perfect example of this.

a: It has legs, tentacles, or fins. (Subkingdom )

b: It has no legs, tentacles, or fins.