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The lion's mane jellyfish, Cyanea capillata, was long-cited as the largest jellyfish, and arguably the longest animal in the world, with fine, thread-like tentacles that may extend up to 36.5 m (119 ft 9 in) long (though most are nowhere near that large). [54] [55] They have a moderately painful, but rarely fatal, sting. [56]
This is an accepted version of this page This is the latest accepted revision, reviewed on 10 January 2025. Species of small, biologically immortal jellyfish Immortal jellyfish Turritopsis dohrnii medusa Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Cnidaria Class: Hydrozoa Order: Anthoathecata Family: Oceaniidae Genus: Turritopsis Species: T. dohrnii Binomial name ...
The largest recorded specimen was measured off the coast of Massachusetts in 1865 and had a bell with a diameter of 210 centimetres (7 feet) and tentacles around 36.6 m (120 ft) long. [2] Lion's mane jellyfish have been observed below 42°N latitude for some time in the larger bays of the East Coast of the United States .
This species of jellyfish is known to live in the Pelagic zone of the ocean in the Indo-West Pacific, Eastern Atlantic and the Red Sea. They live and thrive in cold water and can be found as deep as over 3,000 feet below the surface. The species is bioluminescent. During the day it tends to remain in deeper waters, migrating to surface waters ...
Stauromedusae, although usually classified as jellyfish, are stalked, sessile animals that live in cool to Arctic waters. [39] Cnidarians range in size from a mere handful of cells for the parasitic myxozoans [ 31 ] through Hydra' s length of 5–20 mm ( 1 ⁄ 4 – 3 ⁄ 4 in), [ 40 ] to the lion's mane jellyfish , which may exceed 2 m (6 ft 7 ...
Jellyfish can live for up to five years in the polyp stage and up to two years in the medusa stage (active). [citation needed] When found in warm waters these jellyfish flourish. They are mostly euryhaline but low salinities may have a negative effect on the species. In times of low salinity, these jellyfish exhibit loss of their zooxanthellae. [4]
Once stranded on the beach, cannonball jellies can’t survive long out of the water and eventually become a food source for shorebirds, crabs, sea turtles and other critters that live along the ...
Giant phantom jellyfish live in every ocean except for the Arctic Ocean. However, because they typically swim deep below the surface, they are hardly seen by humans ...