Paraphyllina ransoni is a species of crown jellyfish within the family Paraphyllinidae.[1] It is found distributed in the Pacific and Atlantic Ocean near the United States, Canada and Liberia, as well as in the Mediterranean Sea in deep pelagic waters.[2] The bell reaches up to 75 millimeters wide, and is dome shaped with a thick mesoglea. Colorations are colourless with a reddish stomach, although some individuals are brownish red all over.[3]