Biology/Natural History: Probably lives less than one year. This species can give a painful sting with blisters that lasts for several hours. It is the most likely jellyfish in our area to sting you, and may even trigger allergic shock. Feeds on small fish and crustaceans. Several symbionts may be found on the bell, including juvenile pollock and other fish, and decapod megalops larvae. The gonads of this species are 4 highly folded, ribbonlike structures that hang down under the bell and alternate with the 4 oral lobes. This is the world's largest jellyfish.