The nervous system of box jellyfish: A surprisingly complex system in a simple animal
The four surprisingly complex visual sensory organs of cubomedusae, the rhopalia, contain each six eyes of four morphologically different types, two of which are camera-type eyes. This means that the evolutionary basal nervous system of cubomedusae must process the visual signals received from a total of 24 rhopalial eyes. Since the neuronal organization of the rhopalia is obscure, the role of the