lions mane jelly, aquarium

The lion's mane jellyfish (Cyanea capillata) is the largest known species of jellyfish. Its range is confined to cold, boreal waters of the Arctic, northern Atlantic and northern Pacific Oceans, seldom found farther south than 42�N latitude. Similar jellyfish (which may be the same species) are known from the seas off Australia and New Zealand. The arctic Lion's mane jellyfish is one of the longest known animals; the largest recorded specimen had a bell (body) with a diameter of 2.3 m (7 feet 6 inches) and the tentacles reached 36.5 m (120 feet). It was found washed up on the shore of Massachusetts Bay in 1870. The ribbon worm Lineus longissimus may be even longer, growing to 55 m.