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Orectolobiformes
Carpet sharks are sharks classified in the order Orectolobiformes . Sometimes the common name "carpet shark" (named so because many species resemble ornately patterned carpets) is used interchangeably with "wobbegong", which is the common name of sharks in the family Orectolobidae. Carpet sharks have five gill slits, two spineless dorsal fins, and a small mouth that does not extend past the eyes. Many species have barbels. Characteristics The carpet sharks are a diverse group of sharks with differing sizes, appearances, diets, and habits. They first appeared in the fossil record in the Early Jurassic; the oldest known orectolobiform genera are '' Folipistrix'' (known from Toarcian to Aalenian of Belgium and Germany), '' Palaeobrachaelurus'' (Aalenian to Barremian) and '' Annea'' (Toarcian to Bajocian of Europe). All species have two dorsal fins and a relatively short, transverse mouth that does not extend behind the eyes. Besides the nostrils are barbels, tactile sensory organs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carpet Shark
Carpet sharks are sharks classified in the order Orectolobiformes . Sometimes the common name "carpet shark" (named so because many species resemble ornately patterned carpets) is used interchangeably with "wobbegong", which is the common name of sharks in the family Orectolobidae. Carpet sharks have five gill slits, two spineless dorsal fins, and a small mouth that does not extend past the eyes. Many species have barbels. Characteristics The carpet sharks are a diverse group of sharks with differing sizes, appearances, diets, and habits. They first appeared in the fossil record in the Early Jurassic; the oldest known orectolobiform genera are '' Folipistrix'' (known from Toarcian to Aalenian of Belgium and Germany), '' Palaeobrachaelurus'' (Aalenian to Barremian) and '' Annea'' (Toarcian to Bajocian of Europe). All species have two dorsal fins and a relatively short, transverse mouth that does not extend behind the eyes. Besides the nostrils are barbels, tactile sensory organs, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shark
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha (or Selachii) and are the sister group to the rays. However, the term "shark" has also been used to refer to all extinct members of Chondrichthyes with a shark-like morphology, such as hybodonts and xenacanths. The oldest modern sharks are known from the Early Jurassic. They range in size from the small dwarf lanternshark (''Etmopterus perryi''), a deep sea species that is only in length, to the whale shark (''Rhincodon typus''), the largest fish in the world, which reaches approximately in length. Sharks are found in all seas and are common to depths up to . They generally do not live in freshwater, although there are a few known exceptions, such as the bull shark and the river shark, which can be found in both seawater and fresh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zebra Shark
The zebra shark (''Stegostoma tigrinum'') is a species of carpet shark and the sole member of the family Stegostomatidae. It is found throughout the tropical Indo-Pacific, frequenting coral reefs and sandy flats to a depth of . Adult zebra sharks are distinctive in appearance, with five longitudinal ridges on a cylindrical body, a low caudal fin comprising nearly half the total length, and usually a pattern of dark spots on a pale background. Young zebra sharks under long have a completely different pattern, consisting of light vertical stripes on a brown background, and lack the ridges. This species attains a length of . Zebra sharks are nocturnal and spend most of the day resting motionless on the sea floor. At night, they actively hunt for molluscs, crustaceans, small bony fishes, and possibly sea snakes inside holes and crevices in the reef. Though solitary for most of the year, they form large seasonal aggregations. The zebra shark is oviparous: females produce several dozen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annea (fish)
''Annea'' is an extinct genus of carpet shark from the middle Jurassic epoch of the Jurassic period. It is currently known by two species. ''A. carinata'' is known from the upper Aalenian and lower Bajocian of Germany. ''A. maubeugei'' is known from the middle Toarcian of Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to th .... Its name honors Dr. P. L. Maubeuge, who studied the Jurassic of Lorraine in which this species was found. This genus appears to exhibit heterodonty.Delsate, D., and D. Thies. 1995. Teeth of the fossil shark ''Annea'' Thies 1983 (Elasmobranchii, Neoselachii) from the Toarcian of Belgium. ''Belgian Geological Survey, Professional Paper'' 278: 45–64. References {{Taxonbar, from=Q104860627 Orectolobiformes Prehistoric sharks Fossil taxa describe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spotted Wobbegong
The spotted wobbegong (''Orectolobus maculatus'') is a carpet shark in the family Orectolobidae, endemic to Australia. It is a large, robust species, typically reaching in length. Coloured green, yellow, or brown, it has distinctive O-shaped spots throughout its body. It is nocturnal, resting at day and feeding on fish and invertebrates at night. An ovoviviparous species, the spotted wobbegong gives birth in the spring, during which time males can act aggressively towards other males and females. It has been known to bite humans, sometimes unprovoked, which can produce severe wounds. The species is fished for commercially in Australia, but it is not severely threatened. It is listed as a least-concern species on the IUCN Red List. Taxonomy The species was described by Pierre Joseph Bonnaterre in 1778. He classified it in the genus ''Squalus'', with the full scientific name of ''Squalus maculatus''. Bonnaterre redescribed the species in 1788 in ''Orectolobus'', its current ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wobbegong
The wobbegong is the common name given to the 12 species of carpet sharks in the family Orectolobidae. They are found in shallow temperate and tropical waters of the western Pacific Ocean and eastern Indian Ocean, chiefly around Australia and Indonesia, although one species (the Japanese wobbegong, ''Orectolobus japonicus'') occurs as far north as Japan. The word ''wobbegong'' is believed to come from an Australian Aboriginal language, meaning "shaggy beard", referring to the growths around the mouth of the shark of the western Pacific. Description Wobbegongs are bottom-dwelling sharks, spending much of their time resting on the sea floor. Most species have a maximum length of , but the largest, the spotted wobbegong, ''Orectolobus maculatus'', and banded wobbegong, ''O. halei'', reach about in length. Wobbegongs are well camouflaged with a symmetrical pattern of bold markings which resembles a carpet. Because of this striking pattern, wobbegongs and their close relatives a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ornate Wobbegong
The ornate wobbegong (''Orectolobus ornatus'') is a species of carpet shark that lives in Australia and possibly other countries in the Western Pacific Ocean. It is coloured golden brown, yellow-green and blueish-grey, and it grows to maximum . Described by Charles Walter De Vis in 1883, it is similar in appearance to other Australian wobbegongs and has previously been classified as the same species as the Gulf wobbegong. It is a nocturnal species, hunting at night, and it can bite humans when disturbed. The International Union for Conservation of Nature has listed it as a least-concern species. Taxonomy The ornate wobbegong was described by Charles Walter De Vis in 1883. It was previously assumed to be the juvenile form of the Gulf wobbegong (''Orectolobus halei''), due to similarities between the two species. However, there are multiple differences: for example, the ornate wobbegong is smaller, has a smaller head relative to its body, and is less freckled. "Banded wobbegong ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necklace Carpetshark
The necklace carpetshark (''Parascyllium variolatum''), also known as the varied carpetshark, is a carpetshark of the family Parascylliidae endemic to the waters off Australia's southern coast between latitudes 37°S and 41°S. It is found near the ocean floor over sand, rock, coral reefs, and kelp and seagrass beds at depths down to . It is almost exclusively seen at night and spends the day hidden in caves or camouflaged on the ocean floor. With a slender, elongated body and a maximum length of only 91.0 cm TL, it is harmless to humans. The tail is long, but difficult to tell apart from the rest of the shark. Its body is grey to brown in color with a broad black collar, from which it gets its name, and white spots along its body. It has small spiracles and nostrils with short barbels, likely used for sensory purposes. It is often mistaken for a species of catshark, despite being more closely related to wobbegongs and nurse sharks. It is a nocturnal predator and feeds mostl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barbelthroat Carpetshark ...
The barbelthroat carpetshark (''Cirrhoscyllium expolitum'') is a carpetshark of the family Parascylliidae found in the South China Sea between Luzon in the Philippines and China, between latitudes 23°N and 10°N, at depths between 180 and 190 m. Its length is up to 34 cm. Reproduction is oviparous. References * * Compagno, Dando, & Fowler, ''Sharks of the World'', Princeton University Press, New Jersey 2005 {{Taxonbar, from=Q31750 barbelthroat carpetshark South China Sea Marine fish of Southeast Asia barbelthroat carpetshark The barbelthroat carpetshark (''Cirrhoscyllium expolitum'') is a carpetshark of the family Parascylliidae found in the South China Sea between Luzon in the Philippines and China, between latitude In geography, latitude is a coordinate tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plankton
Plankton are the diverse collection of organisms found in Hydrosphere, water (or atmosphere, air) that are unable to propel themselves against a Ocean current, current (or wind). The individual organisms constituting plankton are called plankters. In the ocean, they provide a crucial source of food to many small and large aquatic organisms, such as bivalves, fish and whales. Marine plankton include bacteria, archaea, algae, protozoa and drifting or floating animals that inhabit the saltwater of oceans and the brackish waters of estuaries. Freshwater plankton are similar to marine plankton, but are found in the freshwaters of lakes and rivers. Plankton are usually thought of as inhabiting water, but there are also airborne versions, the aeroplankton, that live part of their lives drifting in the atmosphere. These include plant spores, pollen and wind-scattered seeds, as well as microorganisms swept into the air from terrestrial dust storms and oceanic plankton swept into the air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Filter Feeder
Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure. Some animals that use this method of feeding are clams, krill, sponges, baleen whales, and many fish (including some sharks). Some birds, such as flamingos and certain species of duck, are also filter feeders. Filter feeders can play an important role in clarifying water, and are therefore considered ecosystem engineers. They are also important in bioaccumulation and, as a result, as indicator organisms. Fish Most forage fish are filter feeders. For example, the Atlantic menhaden, a type of herring, lives on plankton caught in midwater. Adult menhaden can filter up to four gallons of water a minute and play an important role in clarifying ocean water. They are also a natural check to the deadly red tide. Extensive article on the role of menhaden in the ecosystem and possible resul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
