Rhopalia (singular: rhopalium) from Ancient Greek ῥόπαλον (rhópalon) 'club' are small sensory structures of certain Scyphozoan (true jellyfish) and Cubozoan (box jellyfish) species.
Rhopalia (singular: rhopalium) from Ancient Greek ῥόπαλον (rhópalon) 'club' are small sensory structures of certain Scyphozoan (true jellyfish) and Cubozoan (box jellyfish) species.