All six Atolla species rely on bioluminescence -- light they produce themselves -- but the Atolla wyvillei uses the light in a defensive strategy that none of the other species employs.Wyvellei jellyfish live in deep oceans throughout the world, from the Arctic to the Antarctic.

This article was most recently revised and updated by This region is known as the “midnight zone,” because no sunlight penetrates these depths.

A wyvillei usually has 22 marginal tentacles around the rim of the body and one hypertrophied tentacle, which might be 1.5 times to 36 times longer than the bell's diameter.Like many deep-sea denizens, Atolla wyvillei produce their own light, called bioluminescence.

Learn more about the characteristics and natural history of jellyfish in this article.

The Atolla wyvillei jellyfish is a special kind of deep sea creature.

…a medusa, commonly called a jellyfish, usually has the shape of a bell or an umbrella, with tentacles hanging downward at the margin. Like many other members of the Scyphozoa class, Atolla wyvillei can develop into polyps, asexually producing buds that grow into larvae.

A kind of Crown Jellyfish, meaning they have a deep groove around the bell that makes them look like a crown.

Atolla wyvillei, also known as the Atolla jellyfish or Coronate medusa, is a species of deep-sea crown jellyfish (Scyphozoa: Coronatae). Most…

Like many species of mid-water animals, it is deep red in color.

The Scyphozoa class encompasses more than 200 jellyfish species worldwide.

The...

They use this ability differently than other animals, including the other five Atolla species, though.

Jellyfish, any planktonic marine member of the class Scyphozoa (phylum Cnidaria), a group of invertebrate animals composed of about 200 described species, or of the class Cubozoa (approximately 20 species). Scientists have speculated that the tentacles help in sexual reproduction by reaching out in search of potential mates.Atolla wyvillei can reproduce asexually and sexually.

It lives in oceans around the world.

Phylum: Cnidaria Class: Scyphozoa Classification: Invertebrate IUCN status: Not evaluated Lifespan (in wild): One year Weight: Up to 2kg Body size: 2cm to 2m Top speed: 8km/h Diet: Fish, shrimp, crabs, tiny plants and even other species of jellyfish Habitat: Oceans …most familiar medusae are the jellyfishes of the class Scyphozoa, some of which grow to a diameter of two metres. The most famous is the Atolla wyvillei, who reaches about 15 cm (6 in) in diameter and carries 20-something tentacles!

Most live for only a few weeks, but some are known to survive a year or longer.

One of the most incredible of these is Atolla wyvillei, or the Atolla jellyfish.

The tubelike manubrium hangs from the centre of the bell, connecting the mouth at the lower end of the manubrium to the coelenteron within the bell.

Or at least that's how many of them have been discovered so far.

body upto 10 cm; Color & Characteristics.

…and is exploited further by jellyfish, which also show a rudimentary internal circulatory system.

Kingdom: Animalia Phylum: Cnidaria Class: Scyphozoa

One theory suggests these tentacles passively trap food such as crustaceans and organic matter that float by in ocean currents. Like any normal jellyfish, the Atolla has a bell that has tentacles that grow from it, with one tentacle that is usually 1 to 1 1/2 times longer than the others that is believed to be used for sexual reproduction.

…a medusa, commonly called a jellyfish, usually has the shape of a bell or an umbrella, with tentacles hanging downward at the margin. History at your fingertips

Also known as the “alarm jelly” or Coronate medusa, the Atolla jellyfish lives in the bathypelagic zone of the ocean, between depths of 1,000 – 4,000 meters.