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Trapezia Rufopunctata
''Trapezia rufopunctata'' is a species of guard crabs in the family Trapeziidae. Description ''Trapezia rufopunctata'', also known as the commensal crab, can reach the size of about 5 cm in width. They are considered true crabs, with 4 walking legs and a pair of proportionally large and long, flattened clawed legs (chelipeds). The trapezoidal carapace has a unique mottled pattern, with around 100 to 200 reddish or orange spots on a white or pink background, earning it the common name of the “rust spotted guard crab”. Their appearance is believed to help it camouflage within the colorful corals in which it resides. Its eyes, however, are a contrasting shade of green. ''Trapezia rufopunctata'' use drag powered swimming to move around. This guard crab, similar to other members of the family, lives symbiotically in association with Coral, corals. Behaviorally, this species avoids confrontation, quickly retreating into coral branches when approached while holding its claws up defen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polynesia
Polynesia () "many" and νῆσος () "island"), to, Polinisia; mi, Porinihia; haw, Polenekia; fj, Polinisia; sm, Polenisia; rar, Porinetia; ty, Pōrīnetia; tvl, Polenisia; tkl, Polenihia (, ) is a subregion of Oceania, made up of more than 1,000 islands scattered over the central and southern Pacific Ocean. The indigenous people who inhabit the islands of Polynesia are called Polynesians. They have many things in common, including language relatedness, cultural practices, and traditional beliefs. In centuries past, they had a strong shared tradition of sailing and using stars to navigate at night. The largest country in Polynesia is New Zealand. The term was first used in 1756 by the French writer Charles de Brosses, who originally applied it to all the islands of the Pacific. In 1831, Jules Dumont d'Urville proposed a narrower definition during a lecture at the Geographical Society of Paris. By tradition, the islands located in the southern Pacific have also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gonochorism
In biology, gonochorism is a sexual system where there are only two Sex, sexes and each individual organism is either male or female. The term gonochorism is usually applied in animal species, the vast majority of which are gonochoric. Gonochorism contrasts with Hermaphrodite, simultaneous hermaphroditism but it may be hard to tell if a species is gonochoric or sequentially hermaphroditic. (e.g. Parrotfish, ''Patella ferruginea''). However, in gonochoric species individuals remain either male or female throughout their lives. Species that reproduce by Thelytokous, thelytokous parthenogenesis and do not have males can still be classified as gonochoric. Terminology The term is derived from Greek language, Greek (''gone'', generation) + (''chorizein,'' to separate). The term gonochorism originally came from German gonochorismus. Gonochorism is also referred to as unisexualism or gonochory. Evolution Gonochorism has Convergent evolution, evolved independently multiple time ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Culcita Novaeguineae
''Culcita novaeguineae'' (common name, cushion star) is a species of starfish. It has short arms and an inflated appearance and resembles a pentagonal pincushion. It is variable in colour and can be found in tropical warm waters in the Indo-Pacific. Taxonomy ''C. novaeguineae'' has numerous synonyms, at least in part because it has a "goniasterid" phase; the juveniles exhibit little resemblance to the mature form, and gradually change in morphology as they grow. A number of different "species" were described in the literature before they were found to be different developmental stages of the same species. Some were even considered to be in a different family, the Goniasteridae, rather than in the correct family, Oreasteridae.The Cushio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendropoma Maximum
''Dendropoma maximum'' is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails or worm shells. Description These snails are sessile, although the larvae are capable of swimming to disperse, and live on coral reef A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups. Co ...s. They feed with a mucus net. Females are identifiable by a mantle slit. Distribution Found throughout the Indo-Pacific. References Vermetidae Gastropods described in 1825 {{Vermetidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acanthaster Planci
The crown-of-thorns starfish (frequently abbreviated to COTS), ''Acanthaster planci'', is a large starfish that preys upon hard, or stony, coral polyps (Scleractinia). The crown-of-thorns starfish receives its name from venomous thorn-like spines that cover its upper surface, resembling the biblical crown of thorns. It is one of the largest starfish in the world. ''A. planci'' has a very wide Indo-Pacific distribution. It is perhaps most common around Australia, but can occur at tropical and subtropical latitudes from the Red Sea and the East African coast across the Indian Ocean, and across the Pacific Ocean to the west coast of Central America. It occurs where coral reefs or hard coral communities occur in the region. Description The body form of the crown-of-thorns starfish is fundamentally the same as that of a typical starfish, with a central disk and radiating arms. Its special traits, however, include being disc-shaped, multiple-armed, flexible, prehensile, and heavily sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Starfish
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea (). Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as asteroids due to being in the class Asteroidea. About 1,900 species of starfish live on the seabed in all the world's oceans, from warm, tropical zones to frigid, polar regions. They are found from the intertidal zone down to abyssal depths, at below the surface. Starfish are marine invertebrates. They typically have a central disc and usually five arms, though some species have a larger number of arms. The aboral or upper surface may be smooth, granular or spiny, and is covered with overlapping plates. Many species are brightly coloured in various shades of red or orange, while others are blue, grey or brown. Starfish have tube feet operated by a hydraulic system and a mouth at the centre of the oral or lower surface. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pocillopora
''Pocillopora'' is a genus of stony corals in the family Pocilloporidae occurring in the Pacific and Indian Oceans.Veron, J.E.N. (2000) Corals of the World. Australian Institute of Marine Science, Townville, Australia. They are commonly called cauliflower corals and brush corals. Description Cauliflower corals are widespread and can be identified by the presence of wart-like growths on their surface. The colonies can be dome shaped or branching and are very variable in colour and shape depending on the species and the environmental conditions. Species situated on shallow reefs pounded by the sea tend to be stunted whilst those in deep calm water are often thin and open. Each individual polyp has tentacles but these are normally extended only at night. Biology The polyps are hermaphrodite, possessing four sets of male and four sets of female gonads. Pocillopora can reproduce asexually via fragmentation. They also reproduce sexually and the larvae develop inside the polyps rather ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stylophora (coral)
''Stylophora'' is a genus of colonial stony corals in the family Pocilloporidae. They are commonly known as cat's paw corals or birdsnest corals. They are native to the Red Sea, the Indo-Pacific region and eastwards as far as the Pitcairn Islands. Characteristics Members of this genus are branching corals. The finger-like branches vary in width and have blunt tips. The growth forms and colours are variable depending on many factors, including the level of light and the amount of water movement. The colour may be orange, pink, magenta, purple, green or brown. Species The following species are listed in 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 ... (WoRMS): * †'' Stylophora confusa'' Duncan, 1880 * '' Stylophora danae'' Milne Edwards & ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maldives
Maldives (, ; dv, ދިވެހިރާއްޖެ, translit=Dhivehi Raajje, ), officially the Republic of Maldives ( dv, ދިވެހިރާއްޖޭގެ ޖުމްހޫރިއްޔާ, translit=Dhivehi Raajjeyge Jumhooriyyaa, label=none, ), is an archipelagic state located in South Asia, situated in the Indian Ocean. It lies southwest of Sri Lanka and India, about from the Asian continent's mainland. The chain of atolls of the Maldives, 26 atolls stretches across the equator from Atolls of the Maldives#Ihavandhippolhu, Ihavandhippolhu Atoll in the north to Addu Atoll in the south. Comprising a territory spanning roughly including the sea, land area of all the islands comprises , Maldives is one of the world's most geographically dispersed sovereign states and the List of sovereign states and dependent territories in Asia, smallest Asian country as well as one of the smallest Muslim countries, Muslim-majority countries by land area and, with around 557,751 inhabitants, the 2nd List of Asian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indo-Pacific
The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the seas connecting the two in the general area of Indonesia. It does not include the temperate and polar regions of the Indian and Pacific oceans, nor the Tropical Eastern Pacific, along the Pacific coast of the Americas, which is also a distinct marine realm. The term is especially useful in marine biology, ichthyology, and similar fields, since many marine habitats are continuously connected from Madagascar to Japan and Oceania, and a number of species occur over that range, but are not found in the Atlantic Ocean. The region has an exceptionally high species richness, with the world's highest species richness being found in at its heart in the Coral Triangle, and a remarkable gradient of decreasing species richness radiating outward in al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coral
Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton. A coral "group" is a colony of very many genetically identical polyps. Each polyp is a sac-like animal typically only a few millimeters in diameter and a few centimeters in height. A set of tentacles surround a central mouth opening. Each polyp excretes an exoskeleton near the base. Over many generations, the colony thus creates a skeleton characteristic of the species which can measure up to several meters in size. Individual colonies grow by asexual reproduction of polyps. Corals also breed sexually by spawning: polyps of the same species release gametes simultaneously overnight, often around a full moon. Fertilized eggs form planulae, a mobile early form of the coral polyp which, when m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
