Many mollusks are simultaneous reciprocal functional hermaphrodites. In aceras, hermaphrodites where copulation takes place in a chain, the lead animal will play the role of female, the one that finishes the role of male, the intermediaries will play a double role, female with the next, male with the previous. Aceras live and feed in mud and algae. When the dances take place, they gradually gain the free animals that develop the lateral lobes like capes.