Cyanea capillata can reach 2 m bell diameter and 30 m tentacles, among the world's largest jellyfish. Reddish-brown to yellow-orange color, folded bell. Eight very dense tentacle groups falling like a mane. Lives in open water from the Arctic to the Channel and North Atlantic. Very painful sting but rarely dangerous to adult humans. Feeds on plankton, small fish and other jellyfish. Emblematic species cited in Sherlock Holmes.
