The lucky eat the most and move the longest, that is all.

What do you make of those things ?" He swept his arm in an impatient gesture toward a number of the sailors who were working on some kind of rope stuff amidships.
"They move, so does the jelly-fish move.

They move in order to eat in order that they may keep moving.

There you have it.

They live for their belly's sake, and the belly is for their sake.