what are the largest jellyfish?
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The lion's mane jellyfish (Cyanea capillata ) is the largest among the jelly species, with the largest known specimen stretching across 120 feet (36.5 meters) from its top to the bottom of its tentacles.
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Of the 50 or so species of box jellyfish, also called sea wasps, only a few have venom that can be lethal to humans. While box jellyfish are found in warm coastal waters around the world, the lethal varieties are found primarily in the Indo-Pacific region and northern Australia.
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There are more than 2,000 types of jellyfish that are known about, but scientists think that there literally thousands more that have yet to be discovered in the deep ocean water. Only about 70 of the known jellies are actually harmful to humans.
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Some species of box jellyfish produce extremely potent venom: Chironex fleckeri, Carukia barnesi and Malo kingi. Stings from these and a few other species in the class are extremely painful and can be fatal to humans.
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Because their body is 95% water, they are perfectly camouflaged. The body of a jellyfish exhibits radial symmetry and is divided into three main parts: the umbrella, the oral arms (around the mouth) and the stinging tentacles.
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The biggest fish in the ocean is the Rhincodon typus or whale shark. Despite their tremendous size and intimidating appearance, whale sharks are commonly docile and approachable. ... Whale sharks can grow to 40 feet and weigh as much as 40 tons by some estimates!
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Other species of jellyfish are among the most common and important jellyfish predators. Sea anemones may eat jellyfish that drift into their range. Other predators include tunas, sharks, swordfish, sea turtles and penguins. ... Jellyfish can broadly be considered to be top predators in the food chain.
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The combs act like tiny oars, propelling the comb jelly through the water. Many microscopic organisms, such as bacteria, also use cilia to swim—but comb jellies are the largest known animals to do so. ... They are armed with sticky cells (colloblasts) and unlike jellyfish, the tentacles of comb jellies don't sting.
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At least three species of box jellyfish, named for their top bell with four distinct corners, are known to live Hawaii's waters. And, on Oahu's south-facing beaches, inshore numbers of these translucent invertebrates pulse monthly as they head into shallower waters to spawn.
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The Giant Manta Ray (Manta birostris) is the largest of several species of manta ray throughout the world. They can occasionally be seen here in Florida. The most common place to see these elegant swimmers are around coral reefs where smaller fish clean parasites collected on the rays from open waters.
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Irukandji jellyfish have the ability to fire stingers from the tips of their tentacles and inject venom. Irukandji jellyfish's stings are so severe they can cause fatal brain hemorrhages and on average send 50-100 people to the hospital annually.
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['Vancouver Marmot.', 'Red wolf.', 'Pygmy Raccoon.', 'Staghorn coral.', 'Oahu tree snails.', 'Giant seabass.', "Kemp's Ridley Sea Turtle.", "Franklin's Bumblebee."]
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['Deep Grand Reef.', 'Floating Island.', 'Jellyshroom Cave.']
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This species of jellyfish is found through the world's oceans. The Moon jellyfish falls into the category of being slightly venomous. Contact can lead to prickly sensations to mild burning.
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['Redback. Photo taken by Jurgen Otto – https://www.flickr.com/photos/59431731@N05/ ... ', "2. Box Jellyfish. I'm no expert, but I'd guess they're called box jellyfish because they look like boxes. ... ", 'Eastern Brown Snake. ... ', 'Cassowary. ... ', 'Red Kangaroo. ... ', 'Saltwater Crocodile. ... ', 'Great White Shark. ... ', 'Dingo.']
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While box jellyfish are found in warm coastal waters around the world, the lethal varieties are found primarily in the Indo-Pacific region and northern Australia. This includes the Australian box jellyfish (Chironex fleckeri), considered the most venomous marine animal.
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Aurelia aurita. Aurelia aurita (also called the common jellyfish, moon jellyfish, moon jelly or saucer jelly) is a widely studied species of the genus Aurelia.