They are lazy creatures, in no particular hurry, and they fly in wide, slow circles.
They are in many ways archetypal floaters, but a particularly intriguing thing is the small globules which trail their enlarged upper and lower fins; globules which are really egg masses. These light ova-globules break down and scatter on the wind, spreading the floater's tiny progeny through the planet's middle atmosphere. The slow, circular flight path affords the creatures the widest dispersal of their eggs. When spawning is complete, the floaters regain their more graceful profile, their fins being reduced to the original crescent shape.
There is no external evidence of gyro-stalks and instead these floaters have internal balance organs. This would make them unique among Darwin IV's floating species.Another extraordinary feature of the rugose floater is its surprising ability to change color. This also is a unique characteristic among the creatures of Darwin IV, which are not optically equipped.
It is sometimes wondered whether there might be a correlation between the floaters' color and scent, and courtship scenes seem to support this theory. Individuals sometimes float roughly five kilometers apart from one another. There can be color shifts that seem related to their growing sexual excitement.
Mystery aside, the sight of these floaters changing their colors from brown to red to purple is beautiful.