Green Porno Season 2 Episode 4

An actor in a coolie hat represents a young sexless limpet, attached to a rock, its hat visible to other limpets that might float by. After it's been stuck to the rock for awhile, it becomes a female. A sexless limpet attaches itself on top of her and becomes male. More hat-like limpets collect one on top of another into a pile: these limpets are sexless when they arrive, then become male. The female dies; the first male atop her becomes female, and the cycle continues. The chorus of limpets in the stack exclaims, "We're hermaphrodites!"