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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. [3] Scyphozoans have existed from the earliest Cambrian to the ...
Catostylidae is a family of jellyfish, their common name is fat-armed jellies. [1] Members of this family are characterized by their thick, sausage-like oral arms. [2] Members of the family Catostylidae are small marine jellyfish with domed bells. The eight short oral arms are broad and three-sided.
Some box jellyfish species' eyes appear to have evolved more focused vision in response to their habitat. [50] Pupillary contraction appears to have evolved in response to variation in the light environment across ecological niches across three species of box jellyfish (Chironex fleckeri, Chiropsella bronzie, and Carukia barnesi).
Catostylus tagi is a species of jellyfish from warmer parts of the East Atlantic Ocean and since the 2000s also found in the Mediterranean Sea. [1] [2] It is the only member of the family Catostylidae that is found in Europe, [3] and it is a common species in the Tagus estuary in Portugal.
Aglantha digitale is the most common species of jellyfish found in surface waters in the Arctic and sub-Arctic. It occurs above the continental slope but is more common over the deep ocean, seldom occurring at a depth greater than 200 m (660 ft).
Phyllorhiza punctata is a species of jellyfish, also known as the floating bell, Australian spotted jellyfish, brown jellyfish or the white-spotted jellyfish. It is native to the western Pacific from Australia to Japan, but has been introduced widely elsewhere.
Chiropsalmus quadrumanus, commonly known as the four-handed box jellyfish, is a species of box jellyfish found in the western Atlantic Ocean, the Gulf of Mexico and the Pacific Ocean. The sting is venomous and dangerous to humans, especially children.
Tiburonia is a genus of jellyfish in the family Ulmaridae.It was reported in 2003, following the discovery of its only species yet identified, Tiburonia granrojo.It was discovered by a crew from MBARI led by George Matsumoto. [2]