What is the largest and deadliest jellyfish?

What-A-Mess

Jellyfish belong to the Phylum Cnidaria, which has three major classes: Hydrozoa, the primitive fern-like creatures, many of which produce small jellyfish, Scyphozoa, the large jellyfish, or scyphomedusae, and their polyps, and Anthozoa, or sea anemones. Largest is... The largest jellyfish has a bell that can reach 2.4 metres across and tentacles that extend over half the length of a football field. Deadliest... What is the most dangerous jellyfish? Australia's box jelly has a lethal toxin more potent than cobra venom and can kill a person in minutes. http://www.vanaqua.org/education/aquafacts/jellyfish.html Sep 01 06, 9:14 AM

elburcher

The largest Jellyfish is... The lion's mane jellyfish ranges from the Artic to Mexico. The largest of all jellyfish species, in Arctic waters its bell can reach 8 feet with tentacles trailing up to 100 feet long. Juveniles are pink, turning red as they mature into reddish brown or purple adults. The largest documented specimen found in Puget Sound was found beached on Whidbey Island ( in 1998 ) and measured 5 feet across the bell. http://www.boydski.com/diving/photos/lionsmane.htm Sep 01 06, 10:53 PM