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 ...

Crews from the Molokai/Maui Invasive Species Committee and the Division of Aquatic Resources remove invasive upside-down jellyfish from the swimming area at Kaunakakai Harbor. They visit several ...

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 ...