Zoology: light touch on the rudder.
D000818:Animals; D002923:Cilia / Q000502:physiology; D037462:Cubozoa / Q000166:cytology / Q000502:physiology*; D007814:Larva / Q000166:cytology / Q000502:physiology*; D008027:Light; D009424:Nervous System Physiological Phenomena; D017956:Photoreceptor Cells, Invertebrate / Q000502:physiology*; D013550:Swimming / Q000502:physiology