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The Black Sea Nettle is a giant jelly with a distinctive purplish bell which can reach over three feet in diameter; its lacy and pinkish oral arms can reach nearly 20 feet and its stinging tentacles 25 feet or more in length. It provides the Pacific butterfish with food and protection. The silvery butterfish feeds on the plankton gathered by the jelly, and when danger approaches, the butterfish actually hides inside the jelly’s bell. #Sea_Nettle