This fictional world resembles Saturn's satelite Titan. This is a cold planet covered with methan seas and lakes. It's inhabitants are sea cucumbers-like creatures which live in these methan seas. The social structure of this world is an example of gerantocracy, where young and sustainable to the hostile environment individuals are both sailors and vehicles exploited by the older and weaker capitans. The vehicle's set-up recalls human zeppelines of the early XIXth century. The capitans with a rough spiked skin travel inside the sailors from one methan lake to another. The huge helix moves due to muscular contraction of the sailor-cabin caused by the capitan's pricks.