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Cobb Seamount
Cobb Seamount is a seamount ( underwater volcano) and guyot located west of Grays Harbor, Washington, United States. Cobb Seamount is one of the seamounts in the Cobb–Eickelberg Seamount chain, a chain of underwater volcanoes created by the Cobb hotspot that terminates near the coast of Alaska. It lies just west of the Cascadia subduction zone, and was discovered in August 1950 by the U.S. Fish and Wildlife Service fisheries research vessel R/V ''John N. Cobb'' (FWS 1601). By 1967, over of soundings and dozens of samples from the seamount had been collected. Cobb Seamount is geologically interesting for its terraced, pinnacle structure, and its biological community. Like many other seamounts, Cobb Seamount acts as a biological center of diversity, and supports a dense oceanic ecosystem. Relatively convenient access and an interesting biological setting have made the seamount an object of several scientific cruises and dives. Geology Cobb Seamount lies off the coast of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cobb–Eickelberg Seamount Chain
The Cobb-Eickelberg seamount chain is a range of undersea mountains formed by volcanic activity of the Cobb hotspot located in the Pacific Ocean. The seamount chain extends to the southeast on the Pacific Plate, beginning at the Aleutian Trench and terminating at Axial Seamount, located on the Juan de Fuca Ridge. The seamount chain is spread over a vast length of approximately 1,800 km. The location of the Cobb hotspot that gives rise to these seamounts is 46° N—130° W. The Pacific plate is moving to the northwest over the hotspot, causing the seamounts in the chain to decrease in age to the southeast. Axial is the youngest seamount and is located approximately 480 km west of Cannon Beach, Oregon. The most studied seamounts that make up this chain are Axial, Brown Bear, Cobb, and Patton seamounts. There are many other seamounts in this chain which have not been explored. Formation Seamounts are created at hotspots. These are isolated areas within tectonic plate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathymetry
Bathymetry (; ) is the study of underwater depth of ocean floors (''seabed topography''), lake floors, or river floors. In other words, bathymetry is the underwater equivalent to hypsometry or topography. The first recorded evidence of water depth measurements are from Ancient Egypt over 3000 years ago. Bathymetric (or hydrographic) charts are typically produced to support safety of surface or sub-surface navigation, and usually show seafloor relief or terrain as contour lines (called depth contours or isobaths) and selected depths ('' soundings''), and typically also provide surface navigational information. Bathymetric maps (a more general term where navigational safety is not a concern) may also use a Digital Terrain Model and artificial illumination techniques to illustrate the depths being portrayed. The global bathymetry is sometimes combined with topography data to yield a global relief model. Paleobathymetry is the study of past underwater depths. Seabed topogr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cascadia Basin
Ocean Networks Canada is a University of Victoria initiative that operates the NEPTUNE and VENUS cabled ocean observatories in the northeast Pacific Ocean and the Salish Sea. Additionally, Ocean Networks Canada operates smaller community-based observatories offshore from Cambridge Bay, Nunavut., Campbell River, Kitamaat Village and Digby Island. These observatories collect data on physical, chemical, biological, and geological aspects of the ocean over long time periods. As with other ocean observatories such as ESONET, Ocean Observatories Initiative, MACHO and DONET, scientific instruments connected to Ocean Networks Canada are operated remotely and provide continuous streams of freely available data to researchers and the public. Over 200 gigabytes of data are collected every day. The VENUS Observatory is situated at three main sites in the Salish Sea, including Saanich Inlet (depth 100 m), the eastern and central Strait of Georgia (depths 170–300 m), and the Fraser River d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus '' Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithophyllum
''Lithophyllum'' is a genus of thalloid red algae belonging to the family Corallinaceae. Fossil record This genus is known in the fossil record from the Silurian to the Quaternary (from about 418.7 to 0.0 million years ago). Fossils of species within this genus have been found in Europe, United States, South America, Egypt, Iran, Iraq, India, Japan and Australia. Description The monomerous, crustose thalli are composed of a single system of filaments which grow close to the underlying surface. ''Lithophyllum'' reproduces by means of conceptacles. The epithallus is periodically shed to avoid organisms growing on top of the alga. Species The valid species currently considered to belong to this genus are: *'' Lithophyllum acanthinum'' Foslie, 1907 *'' Lithophyllum accedens'' Foslie, 1907 *'' Lithophyllum acrocamptum'' Heydrich, 1902 *'' Lithophyllum aequum'' Foslie, 1907 *'' Lithophyllum albanense'' Lemoine, 1924 *'' Lithophyllum almanense'' Lemoine, 1920 *'' L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithothamnion
''Lithothamnion'' is a genus of thalloid red alga comprising 103 species. Its members are known by a number of common names.Recorded common names are griuán, maërl, punalevä-suku, stenhinna and maerl. The monomerous, crustose thalli are composed of a single system of filaments which grow close to the underlying surface. ''Lithothamnion'' reproduces by means of multiporate conceptacles. Species The valid species currently considered to belong to this genus are: *''L. album'' *''L. antarcticum'' *''L. apiculatum'' *''L. asperulatum'' *''L. aucklandicum'' *''L. australe'' *''L. brasiliense'' *''L. breviaxe'' *''L. calcareum'' *''L. californicum'' *''L. capense'' *''L. carolii'' *''L. chathamense'' *''L. circumscriptum'' *''L. colliculosum'' *''L. corallioides'' *''L. coralloides'' *''L. cottonii'' *''L. coulmanicum'' *''L. crispatum'' *''L. dehiscens'' *''L. diguetii' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coralline Algae
Coralline algae are red algae in the order Corallinales. They are characterized by a thallus that is hard because of calcareous deposits contained within the cell walls. The colors of these algae are most typically pink, or some other shade of red, but some species can be purple, yellow, blue, white, or gray-green. Coralline algae play an important role in the ecology of coral reefs. Sea urchins, parrot fish, and limpets and chitons (both mollusks) feed on coralline algae. In the temperate Mediterranean Sea, coralline algae are the main builders of a typical algal reef, the ''Coralligène'' ("coralligenous"). Many are typically encrusting and rock-like, found in marine waters all over the world. Only one species lives in freshwater. Unattached specimens ( maerl, rhodoliths) may form relatively smooth compact balls to warty or fruticose thalli. A close look at almost any intertidal rocky shore or coral reef will reveal an abundance of pink to pinkish-grey patches, distributed th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthasterias Koehleri
''Orthasterias'' is a genus of sea stars in the family Asteriidae. ''Orthasterias koehleri'', the rainbow star or red-banded sea star, is the only species in the genus. It is found in the North Pacific Ocean. Description The rainbow star is a large starfish, growing to a diameter of about with an arm length of . It usually has five slender tapering arms and the aboral (upper) surface is pink or red with irregular patches or bands of darker red, orange or grey. The surface is covered with sharp white or mauve spines, each surrounded by a ring of pedicellariae, tiny pincer-like organs. Distribution and habitat The rainbow star is found in northern parts of the Pacific Ocean with its range extending from California to Alaska at depths down to about . It also occurs in mid-ocean on knolls and seamounts. It is an uncommon species and is usually found on soft bottoms of mud or sand, or on kelp or rock surfaces. Biology The rainbow star is a predator and feeds on a range of in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Star
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] |
Sponge
Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges were first to branch off the evolutionary tree from the last common ancestor of all animals, making them the sister group of all other animals. Etymology The term ''sponge'' derives from the Ancient Greek word ( 'sponge'). Overview Sponges are similar to other animals in that they are multicellula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hinnites Multirugosus
''Hinnites'' is a genus of rock scallops, marine bivalve mollusks in the family Pectinidae, the scallops. These mollusks have been recorded as fossils from the Triassic to the Quaternary (from 235.0 to 0.126 Ma). Fossils have been found in the sediments of Algeria, Angola, Tanzania, Ethiopia, South Africa, Oman, Saudi Arabia, United States, Australia and of various European countries. Description This genus include scallops with thick shells resembling that of an oyster. ''Hinnites'' is unusual in that, like the extant taxon ''Crassadoma gigantea'', it was free-swimming as a juvenile, but subsequently cemented itself to a hard substrate. Species Species within the genus ''Hinnites'' include: * ''Hinnites corallinus'' G. B. Sowerby I, 1827 * ''Hinnites crispus'' † (Brocchi, 1814) * ''Hinnites denticostatus'' † Klipstein 1843 * ''Hinnites distortus'' (da Costa, 1778) * ''Hinnites ercolanianus'' † Cocconi 1873 * ''Hinnites granulosus'' † Klipstein 1843 * ''Hinnites o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sebastes Miniatus
''Sebastes miniatus'', the vermilion rockfish, vermilion seaperch, red snapper, red rock cod, and rasher, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is native to the waters of the Pacific Ocean off western North America from Baja California to Alaska. Taxonomy ''Sebastes miniatus'' was first formally described in 1880 by the American ichthyologists David Starr Jordan and Charles Henry Gilbert with the type locality given as Santa Barbara and Monterey, California. Some authorities place this species in the subgenus ''Rosicola''. The specific name ''miniatus'' means "bright red" or "scarlet" a reference to the color of the vermilion fins and body. Description ''Sebastes miniatus'' has a rather stocky body shape with the depth of the body being equivalent to just under two fifths of its standard length. It has moderately robust to weak spines on its head, the nasal, preocular, supraocular, po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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