Rhopalium
Rhopalia (sing. rhopalium; from Ancient Greek ῥόπαλον (rhópalon) 'club, mace') are small sensory organs of certain Scyphozoan (true jellyfish) and Cubozoan (box jellyfish) species.
Rhopalia (sing. rhopalium; from Ancient Greek ῥόπαλον (rhópalon) 'club, mace') are small sensory organs of certain Scyphozoan (true jellyfish) and Cubozoan (box jellyfish) species.