Fitness : ~29
This actor is just making a U and don't move anymore.
Fitness : ~25
This actor is in a U position put the tail is still moving to give the actor velocity.
Fitness : ~82
This actor is moving between two opposite U positions, i looks a bit like a serpent move.
Fitness : ~130
This actor is faster than Double U.
Fitness : ~153
This actor moves like a Double U but the movement is decomposed to go to bottom, and synchronized to go to top.
Fitness : ~68
This medusa is a slower and horizontally symmetric version of Medusa.
