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Craspedacusta sowerbii or peach blossom jellyfish [1] is a species of freshwater hydrozoan jellyfish, or hydromedusa cnidarian. Hydromedusan jellyfish differ from scyphozoan jellyfish because they have a muscular, shelf-like structure called a velum on the ventral surface, attached to the bell margin.
Most jellyfish are marine animals, although a few hydromedusae inhabit freshwater. The best known freshwater example is the cosmopolitan hydrozoan jellyfish, Craspedacusta sowerbii . It is less than an inch (2.5 cm) in diameter, colorless and does not sting. [ 120 ]
Hydra (/ ˈ h aɪ d r ə / HY-drə) is a genus of small freshwater hydrozoans of the phylum Cnidaria.They are solitary, carnivorous jellyfishlike animals, [2] native to the temperate and tropical regions.
“This is my first time hearing about them in Stumpy Meadows Reservoir during my 9 years on the Eldorado National Forest,” said a federal aquatic biologist.
Hydrozoans are related to jellyfish and corals, which also belong to the phylum Cnidaria. Some examples of hydrozoans are the freshwater jelly (Craspedacusta sowerbyi), freshwater polyps , Obelia, Portuguese man o' war (Physalia physalis), chondrophores (Porpitidae), and pink-hearted hydroids .
Aequorea victoria, also sometimes called the crystal jelly, is a bioluminescent hydrozoan jellyfish, or hydromedusa, that is found off the west coast of North America.. The species is best known as the source of aequorin (a photoprotein), and green fluorescent protein (GFP); two proteins involved in bioluminescence.
The box jellyfish looks ephemeral and harmless, but it is the most venomous animal in the ocean. Its sting packs a powerful punch that can stop your heart in minutes, but not before inflicting ...
The jellyfish-like creature is a floating colonial coelenterate with a number of polyps and a conspicuous float. Beachgoers should avoid them because, like a jellyfish, they have tentacles that ...