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Astropecten Spinulosus
''Astropecten spinulosus'' is a sea star of the family Astropectinidae. Habitat and behaviour Starfishes of genus Astropecten live on mobile seabed (sandy, muddy or gravel seabed) and they remain largely buried under sediment during the day. During the late afternoon and the night starfishes go out to hunt mainly bivalve molluscs, which are their favourite prey. This species lives only in the Mediterranean Sea and it prefers sandy seabed near meadows '' Posidonia oceanica'' or ''Cymodocea nodosa'' or other mobile seabed in areas very rich in algae from 1 to 50 m deep. This species is active and easy to find during the night, sometimes it is possible to find it in the late afternoon. Description It has very short superomarginal plates (the height of the vertical face is slightly larger than the width of plate), completely covered by scales and very small spines. Only from 1 to 3 small spines on the top of plate can be considered a real spines (the other spines are too small). T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten Spinulosus Sardegna09 C Cm07 6021 Dett
''Astropecten'' is a genus of sea stars of the family Astropectinidae. Identification These sea stars are similar one to each other and it can be difficult to determine with certainty the species only from a photograph. To have a certain determination, in some cases, animals should be analyzed in the laboratory or using genetic testing, but often it isn’t possible. In order to determine the species, with a reasonable margin of error, it’s necessary to observe the appearance of the animal, in particular, based on some typical features described by principal authors that have analyzed over the years a large number of specimens in the laboratory. The main elements, to determine the various species from photo, are: the appearance of the dorsal marginal plates and spines, the size, the shape of disc and arms. For a good identification by sea photo it is important to take a complete picture of all the subject, a picture of the detail of the marginal plates and to measure as pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Star
Starfish or sea stars are Star polygon, star-shaped echinoderms belonging to the class (biology), class Asteroidea (). Common usage frequently finds these names being also applied to brittle star, 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, tropics, tropical zones to frigid, polar regions of Earth, polar regions. They are found from the intertidal zone down to abyssal zone, 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 fee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropectinidae
The Astropectinidae are a family of sea stars in the order Paxillosida. Usually, these starfish live on the seabed and immerse themselves in soft sediment such as sand and mud. They are not to be confused with species in the genus '' Archaster'', which share similar shape and life habits, but belong to the family Archasteridae (order Valvatida). Genera There are 27 genera in the family: * '' Astromesites'' Fisher, 1913 * ''Astropecten'' Gray, 1840 * '' Astropectinides'' Verrill, 1914 * '' Bathybiaster'' Danielssen & Koren, 1883 * '' Blakiaster'' Perrier, 1881 * '' Bollonaster'' McKnight, 1977 * '' Bunodaster'' Verrill, 1909 * '' Craspidaster'' Sladen, 1889 * '' Ctenophoraster'' Fisher, 1906 * '' Ctenopleura'' Fisher, 1913 * '' Dipsacaster'' Alcock, 1893 * '' Dytaster'' Sladen, 1889 * '' Koremaster'' Fisher, 1913 * '' Leptychaster'' E.A. Smith, 1876 * '' Lonchotaster'' Sladen, 1889 * '' Macroptychaster'' H.E.S. Clark, 1963 * '' Mimastrella'' Fisher, 1916 * '' Patagiaster'' Fisher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Posidonia Oceanica
''Posidonia oceanica'', commonly known as Neptune grass or Mediterranean tapeweed, is a seagrass species that is endemic to the Mediterranean Sea. It forms large underwater meadows that are an important part of the ecosystem. The fruit is free floating and known in Italy as "the olive of the sea" (''l'oliva di mare''). Balls of fibrous material from its foliage, known as ''egagropili'' or ''Neptune balls'', wash up to nearby shorelines. The Posidonia has a very high carbon absorption capacity, being able to soak up 15 times more carbon dioxide every year than a similar sized piece of the Amazon rainforest. Morphology Posidonia oceanica has roots (which mainly serve to anchor the plant to the substrate), rhizome and tapeform leaves. The rhizomes, up to 1 cm thick, grow both horizontally (plagiotropic rhizomes), and vertically (orthotropic rhizomes). The former, thanks to the presence at the bottom of lignited roots up to 15 cm long, anchor the plant to the substrate. The latte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cymodocea Nodosa
''Cymodocea nodosa'' is a species of seagrass in the family Cymodoceaceae and is sometimes known as little Neptune grass.Lesser Neptune Grass (''Cymodocea nodosa'') ''Archipelagos Wildlife Library''. Retrieved 2011-08-17 As a seagrass, it is restricted to growing underwater and is found in shallow parts of the and certain adjoining areas of the . Description ''C. nodosa'' has light green or greyish-green leaves. They are very narrow but may be up to forty centim ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten
''Astropecten'' is a genus of sea stars of the family Astropectinidae. Identification These sea stars are similar one to each other and it can be difficult to determine with certainty the species only from a photograph. To have a certain determination, in some cases, animals should be analyzed in the laboratory or using genetic testing, but often it isn’t possible. In order to determine the species, with a reasonable margin of error, it’s necessary to observe the appearance of the animal, in particular, based on some typical features described by principal authors that have analyzed over the years a large number of specimens in the laboratory. The main elements, to determine the various species from photo, are: the appearance of the dorsal marginal plates and spines, the size, the shape of disc and arms. For a good identification by sea photo it is important to take a complete picture of all the subject, a picture of the detail of the marginal plates and to measure as pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten Platyacanthus
''Astropecten platyacanthus'' is a sea star of the family Astropectinidae. Habitat and behaviour Starfishes of genus Astropecten live on mobile seabed (sandy, muddy or gravel seabed) and they remain largely buried under sediment during the day. During the late afternoon and the night starfishes go out to hunt mainly bivalve molluscs, which are their favourite preys. This species lives only in the Mediterranean Sea and it lives on all mobile seabed at depths between 1 and 60 m, but it is more frequently in seabed of mixed coarse sand and mud at 1–4 m depth. This species is active and easy to find during the night but also during the day, especially in early morning and late afternoon. Description It has narrow and high superomarginal plates, laterally covered with scales and small spines (on vertical face). Every superomarginal plates is equipped with one strong spine, usually sharp but irregularly shaped, slightly flattened laterally, often yellow or orange but rarely off whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten Spinulosus Croazia09 A 6957
''Astropecten'' is a genus of sea stars of the family Astropectinidae. Identification These sea stars are similar one to each other and it can be difficult to determine with certainty the species only from a photograph. To have a certain determination, in some cases, animals should be analyzed in the laboratory or using genetic testing, but often it isn’t possible. In order to determine the species, with a reasonable margin of error, it’s necessary to observe the appearance of the animal, in particular, based on some typical features described by principal authors that have analyzed over the years a large number of specimens in the laboratory. The main elements, to determine the various species from photo, are: the appearance of the dorsal marginal plates and spines, the size, the shape of disc and arms. For a good identification by sea photo it is important to take a complete picture of all the subject, a picture of the detail of the marginal plates and to measure as pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astropecten Spinulosus
''Astropecten spinulosus'' is a sea star of the family Astropectinidae. Habitat and behaviour Starfishes of genus Astropecten live on mobile seabed (sandy, muddy or gravel seabed) and they remain largely buried under sediment during the day. During the late afternoon and the night starfishes go out to hunt mainly bivalve molluscs, which are their favourite prey. This species lives only in the Mediterranean Sea and it prefers sandy seabed near meadows '' Posidonia oceanica'' or ''Cymodocea nodosa'' or other mobile seabed in areas very rich in algae from 1 to 50 m deep. This species is active and easy to find during the night, sometimes it is possible to find it in the late afternoon. Description It has very short superomarginal plates (the height of the vertical face is slightly larger than the width of plate), completely covered by scales and very small spines. Only from 1 to 3 small spines on the top of plate can be considered a real spines (the other spines are too small). T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnivore
A carnivore , or meat-eater (Latin, ''caro'', genitive ''carnis'', meaning meat or "flesh" and ''vorare'' meaning "to devour"), is an animal or plant whose food and energy requirements derive from animal tissues (mainly muscle, fat and other soft tissues) whether through hunting or scavenging. Nomenclature Mammal order The technical term for mammals in the order Carnivora is ''carnivoran'', and they are so-named because most member species in the group have a carnivorous diet, but the similarity of the name of the order and the name of the diet causes confusion. Many but not all carnivorans are meat eaters; a few, such as the large and small cats (felidae) are ''obligate'' carnivores (see below). Other classes of carnivore are highly variable. The Ursids, for example: While the Arctic polar bear eats meat almost exclusively (more than 90% of its diet is meat), almost all other bear species are omnivorous, and one species, the giant panda, is nearly exclusively herbivorous. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusc
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gastropods ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
