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Turritopsis dohrnii, also known as the immortal jellyfish, is a species of small, biologically immortal jellyfish [2] [3] found worldwide in temperate to tropic waters. It is one of the few known cases of animals capable of completely reverting to a sexually immature, colonial stage after having reached sexual maturity as a solitary individual.
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]
Malo kingi or the common kingslayer is a species of Irukandji jellyfish.It was first described to science in 2007, and is one of four species in the genus Malo. [1] It has one of the world's most potent venoms, even though it is no bigger than a human thumbnail. [2]
There's evidence to suggest that the comb jellyfish was the first animal to appear on Earth some 700 million years ago. ‘Time-traveler’ jellyfish found to age backward in accidental discovery ...
Like other jellyfish, lion's manes are capable of both sexual reproduction in the medusa stage and asexual reproduction in the polyp stage. [15] Lion's mane jellyfish have four different stages in their year-long lifespan: a larval stage, a polyp stage, an ephyrae stage, and the medusa stage. [15]
A jellyfish bloom is defined as a substantial increase in a jellyfish population within a short time period; the result of a higher reproduction rate. [2] Since jellyfish naturally have high reproductive rates, high-density blooms can occur as a result of both behavioral and ecological causes.
Swimming. The entire Turritopsis genus is a very small group of Hydrozoa creatures with the Crimson Jellyfish being on the slightly larger side of the genus. The Crimson Jellyfish ranges in size from just 3 to 7mm depending on what stage of its life cycle the creature is currently in. Being roughly the size of a pinky nail, the creature is like many other jellyfish being very simple with few ...
The Scyphozoa are an exclusively marine class of the phylum Cnidaria, [2] referred to as the true jellyfish (or "true jellies"). The class name Scyphozoa comes from the Greek word skyphos ( σκύφος ), denoting a kind of drinking cup and alluding to the cup shape of the organism.