Bell:Spotted jellies have rounded bells.(Monterey Bay Aquarium, 2008)
Arms: strange clumps of oral arms bear clublike appendages that hang down below. Instead of a single mouth, they have many small mouth openings on their oral-arms, which capture small zooplankton.(Monterey Bay Aquarium, 2008)
Color: each jelly grows a crop of algae, which gives them a greenish-brown color. They harvest some of their food directly from the algae.(Monterey Bay Aquarium, 2008)
Spotted jellies swim in large swarms to stay in the direct rays of the sun. Sunlight fuels the growth of the symbiotic algae the jellies thrive on. At night, spotted jellies descend to deeper waters, to an anoxic (oxygen-deficient) layer that's high in concentrations of hydrogen sulfide. There, the jellies absorb ammonium, which fertilizes the algae.(Monterey Bay Aquarium, 2008)