Rhizostomae
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Rhizostomae
Rhizostomae or Rhizostomeae is an order of jellyfish. Species of this order have neither tentacles nor other structures at the bell's edges. Instead, they have eight highly branched oral arms, along which there are suctorial minimouth orifices. (This is in contrast to other scyphozoans, which have four of these arms.) These oral arms become fused as they approach the central part of the jellyfish. The mouth of the animal is also subdivided into minute pores that are linked to coelenteron. Edible jellyfish Jellyfish species fished on a commercial basis for human consumption (both as a delicacy and for use in traditional medicine) are all from this orderLópez-Martínez; and Álvarez-Tello (2013). ''The jellyfish fishery in Mexico.'' Agricultural Sciences 4(6A): 57-61. and include members of the families Catostylidae, Lobonematidae, Rhizostomatidae and Stomolophidae.Miura; Miura; and Park (2006). ''Collagen as the Major Edible Component of Jellyfish (Stomolophus nomural).'' Jou ...
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Jellyfish
Jellyfish and sea jellies are the informal common names given to the medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria. Jellyfish are mainly free-swimming marine animals with umbrella-shaped bells and trailing tentacles, although a few are anchored to the seabed by stalks rather than being mobile. The bell can pulsate to provide propulsion for highly efficient animal locomotion, locomotion. The tentacles are armed with Cnidocyte, stinging cells and may be used to capture prey and defend against predators. Jellyfish have a complex Biological life cycle, life cycle; the medusa is normally the sexual phase, which produces planula larvae that disperse widely and enter a sedentary polyp (zoology), polyp phase before reaching sexual maturity. Jellyfish are found all over the world, from surface waters to the deep sea. Scyphozoans (the "true jellyfish") are exclusively marine habitats, marine, but some hydrozoans with a simila ...
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Phyllorhiza Punctata
''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. It feeds primarily on zooplankton. ''P. punctata'' generally can reach up to in bell diameter, but in October 2007, one wide, perhaps the largest ever recorded, was found on Sunset Beach, North Carolina. Description True jellyfish go through a two-stage life cycle which consists of a medusa stage (adult) and a polyp stage (juvenile). In the medusa stage, male jellyfish release sperm into the water column and the female jellyfish gathers the sperm into her mouth where she holds the eggs. Once fertilization occurs and larvae are formed they leave their mother and settle to the ocean floor. Once on the bottom a polyp form occurs and this form reproduces asexually by "cloning" or dividing itself into other polyps. ...
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Thysanostoma Loriferum
Thysanostomatidae is a family of true jellyfish from the Indo-Pacific. The first sighting of ''Thysanostoma loriferum'' in Hong Kong; extending its known range from the Philippines, the Malay Archipelago, and Hawaii; was from the Hong Kong Jellyfish Citizen Science project and sightings on iNaturalist. Genera According to the World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialist ..., this family includes one genus, ''Thysanostoma'', with three species: * '' Thysanostoma flagellatum'' (Haeckel, 1880) * '' Thysanostoma loriferum'' (Ehrenberg, 1837) * '' Thysanostoma thysanura'' Haeckel, 1880 References External links * Kolpophorae Cnidarian genera {{Scyphozoa-stub ...
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Stomolophus Meleagris
The cannonball jellyfish (''Stomolophus meleagris''), also known as the cabbagehead jellyfish, is a species of jellyfish in the family Stomolophidae. Its common name derives from its similarity to a cannonball in shape and size. Its dome-shaped bell can reach in diameter and, in the Atlantic and Gulf of Mexico, the rim is sometimes colored with brown pigment. In the Pacific, this jellyfish can also have a blue pigment. Underneath the body is a cluster of oral arms that extend out around the mouth. These arms function in propulsion and as an aid in catching prey. Cannonballs are prominent from North America's eastern seaboard all the way to Brazil, but are also found in parts of the Pacific. Habitat They have been found in Pacific Ocean (South China Sea to Sea of Japan, and California to Ecuador) and the mid-west Atlantic Ocean (New England to Brazil). They are common on the southeastern coast of the United States, including the Gulf Coast. On the southeast coast they are extrem ...
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Rhizostoma Pulmo
''Rhizostoma pulmo'', commonly known as the barrel jellyfish, the dustbin-lid jellyfish or the frilly-mouthed jellyfish, is a scyphomedusa in the family Rhizostomatidae. It is found in the northeast Atlantic, and in the Adriatic, Mediterranean Sea, Black Sea and Sea of Azov. It is also known from the southern Atlantic off the western South African coast and into False Bay.Branch, G.M., Branch, M.L, Griffiths, C.L. and Beckley, L.E. 2010. ''Two Oceans: a guide to the marine life of southern Africa'' It is common in the Irish Sea. It typically is up to in diameter, but can exceptionally reach or larger, making it the largest jellyfish in British and Irish waters (''Cyanea capillata'' reaches an even larger size, but is generally smaller in Britain). On 13 July 2019, wildlife biologist Lizzie Daly dived off the coast of Cornwall in the United Kingdom, along with the underwater cinematographer Dan Abbott. The two divers shared their encounter with a human-sized barrel jellyfish, ' ...
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Mastigias Papua
The spotted jelly (''Mastigias papua''), lagoon jelly, golden medusa, or Papuan jellyfish, is a species of jellyfish from the Indo-Pacific oceans. Like corals, sea anemones, and other sea jellies, it belongs to the phylum Cnidaria. ''Mastigias papua'' is one of the numerous marine animals living in symbiosis with zooxanthellae, a photosynthetic alga. They have a lifespan of approximately 4 months and are active primarily in mid-summer to early autumn. Taxonomy Five subspecies have been described, inhabiting separate marine lakes in the Palau group. *''M.'' cf. ''p. remengesaui'' (in Uet era Ongael) *''M.'' cf. ''p. nakamurai'' (in Goby Lake) *''M.'' cf. ''p. etpisoni'' (in Ongeim’l Tketau) *''M.'' cf. ''p. saliii'' (in Clear Lake) *''M.'' cf. ''p. remeliiki'' (in Uet era Ngermeuangel) Description The spotted jelly is so named because of the little dots that garnish its jelly. It usually measures between in length and between in diameter but some individuals can reach l ...
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Cephea Cephea
''Cephea cephea'', also known as the crown jellyfish, or cauliflower jellyfish, is a species of jellyfish in the family Cepheidae. It occurs in the tropical waters of the western Indo-Pacific to Northern Australia. The species was first described by Peter Forsskål in 1775 and originally given the name ''Medusa cephea''. It inhabits the pelagic zone of tropical and sub-tropical waters and is most commonly found in the Indo-West Pacific, eastern Atlantic and the Red Sea. Although this species is among the most venomous jellyfish, it is not harmful to humans and is eaten as a delicacy and used for medical purposes in China and Japan. The species can achieve a diameter of up to 60 cm. Description ''Cephea cephea'' is purplish-blue in color and grow to up to 60 centimeters in diameter. This species has wart-like projections and a bell shape that is associated with the given common names for the species. As in other jellyfish species, the tentacles contain nematocysts that are u ...
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Catostylus Mosaicus
The jelly blubber (''Catostylus mosaicus''), also known as the blue blubber jellyfish, is a species of jellyfish from coastal regions in the Indo-Pacific. It is the most commonly encountered jellyfish along the Australian eastern coast and large swarms sometimes appear in estuarine waters. Description In Sydney waters, the jelly blubber's large bell is a creamy white or brown colour, but farther north in Australia it is usually blue. The colours are derived from symbiotic algal plant cells within the body of the jellyfish. There is no obvious mouth on the underside, but there are small openings on each arm, through which food is passed to the stomach. The tentacles also have stinging cells that can capture tiny crustaceans and other plankton. It can grow up to 35cm across. The sting can be painful but generally poses no serious risk to humans. Distribution and habitat This jellyfish is found in coastal parts of the Indo-Pacific. In Australia, it occurs off the coasts of Quee ...
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Cassiopea Andromeda
''Cassiopea andromeda'' is one of many cnidarian species called the upside-down jellyfish. It usually lives in intertidal sand or mudflats, shallow lagoons, and around mangroves. This jellyfish, often mistaken for a sea anemone, usually keeps its mouth facing upward. Its yellow-brown bell, which has white or pale streaks and spots, pulsates to run water through its arms for respiration and to gather food. Alimentation and strategies ''Cassiopea andromeda'' is carnivorous and eats small animals from the sea or just pieces of them after it paralyzes its prey with its mucus and nematocysts when they are released. This jellyfish also lives in a symbiotic relationship with photosynthetic dinoflagellate algae, the zooxanthellae Zooxanthellae is a colloquial term for single-celled dinoflagellates that are able to live in symbiosis with diverse marine invertebrates including demosponges, corals, jellyfish, and nudibranchs. Most known zooxanthellae are in the genus ''S ..., and w ...
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Versurigidae
''Versuriga'' is a monotypic genus In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ... of jellyfishes belonging to the monotypic family Versurigidae. The only species is ''Versuriga anadyomene''. References Mastigiidae Scyphozoan genera Monotypic cnidarian genera {{scyphozoa-stub ...
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Thysanostomatidae
Thysanostomatidae is a family of true jellyfish from the Indo-Pacific. The first sighting of ''Thysanostoma loriferum'' in Hong Kong; extending its known range from the Philippines, the Malay Archipelago, and Hawaii; was from the Hong Kong Jellyfish Citizen Science project and sightings on iNaturalist. Genera According to the World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialist ..., this family includes one genus, ''Thysanostoma'', with three species: * '' Thysanostoma flagellatum'' (Haeckel, 1880) * '' Thysanostoma loriferum'' (Ehrenberg, 1837) * '' Thysanostoma thysanura'' Haeckel, 1880 References External links * Kolpophorae Cnidarian genera {{Scyphozoa-stub ...
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