Mucus from jellyfish that sit upside-down on the seafloor has blobs lined with stinging cells The stinging cells are coated on tiny mobile blobs called cassiosomes within the mucus that “zoom ...

Cassiopea andromeda. Aptly named upside-down jellyfish lie with their bells on the seafloor in shallow waters and their arms waving upward. In effect they’re farmers. Tiny photosynthesizing ...