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Hexactinellida Genera
Hexactinellid sponges are sponges with a skeleton made of four- and/or six-pointed siliceous spicules, often referred to as glass sponges. They are usually classified along with other sponges in the phylum Porifera, but some researchers consider them sufficiently distinct to deserve their own phylum, Symplasma. Some experts believe glass sponges are thlongest-lived animals on earth these scientists tentatively estimate a maximum age of up to 15,000 years. Biology Glass sponges are relatively uncommon and are mostly found at depths from below the sea level. Although the species '' Oopsacas minuta'' has been found in shallow water, others have been found much deeper. They are found in all oceans of the world, although they are particularly common in Antarctic and Northern Pacific waters. They are more-or-less cup-shaped animals, ranging from in height, with sturdy lattice-like internal skeletons made up of fused spicules of silica. The body is relatively symmetrical, with a larg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernst Haeckel
Ernst Heinrich Philipp August Haeckel (; 16 February 1834 – 9 August 1919) was a German zoologist, naturalist, eugenicist, philosopher, physician, professor, marine biologist and artist. He discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms and coined many terms in biology, including ''ecology'', '' phylum'', ''phylogeny'', and ''Protista.'' Haeckel promoted and popularised Charles Darwin's work in Germany and developed the influential but no longer widely held recapitulation theory ("ontogeny recapitulates phylogeny") claiming that an individual organism's biological development, or ontogeny, parallels and summarises its species' evolutionary development, or phylogeny. The published artwork of Haeckel includes over 100 detailed, multi-colour illustrations of animals and sea creatures, collected in his ''Kunstformen der Natur'' ("Art Forms of Nature"), a book which would go on to influence the Art Nouveau artistic mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venus' Flower Basket
The Venus' flower basket (''Euplectella aspergillum'') is a glass sponge in the phylum Porifera. It is a marine sponge found in the deep waters of the Pacific ocean, usually at depths below 500 meters. Like other sponges, they feed by filtering sea water to capture plankton and marine snow. Similar to other glass sponges, they build their skeletons out of silica, which forms a unique lattice structure of spicules. The sponges are usually between 10 cm and 30 cm tall, and their bodies act as refuge for their mutualist shrimp partners. This body structure is of great interest in materials science as the optical and mechanical properties are in some ways superior to man-made materials. Little is known regarding their reproduction habits, however fluid dynamics of their body structure likely influence reproduction and it is hypothesized that they may be hermaphroditic. Habitat Venus' flower baskets are found in the western Pacific Ocean nearby the Philippine Islands. Other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMCS Cape Breton (ARE 100)
HMCS ''Cape Breton'' was a Royal Canadian Navy . Originally built for the Royal Navy as HMS ''Flamborough Head'' in 1944, she was transferred in 1952. Upon her commissioning she was the second ship to bear the name ''Cape Breton''. She served operationally from 1953–1964, when she was laid up. She was used as a floating machine shop until the late-1990s, before being sold for use as an artificial reef off the coast of British Columbia. Design and description ''Flamborough Head'' was one of the 21 s, built for the Royal Navy during the Second World War. The ''Beachy Head''s were modified versions of the Fort ship, called the "Victory" design. The ships of the class had a standard displacement of and fully loaded. They were long overall and between perpendiculars with a beam of and a draught of . The vessels were propelled by one shaft driven by a reciprocating triple expansion steam engine powered by steam from two Foster Wheeler boilers, creating . This gave the ves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMCS Saskatchewan (DDE 262)
HMCS ''Saskatchewan'' was a that served in the Royal Canadian Navy (RCN) and later the Canadian Forces. She was the second Canadian naval unit to bear the name . The ship was named for the Saskatchewan River which runs from Saskatchewan to Manitoba in Canada. Entering service in 1963, she was mainly used as a training ship on the west coast. She was decommissioned in 1994 and sold for use as an artificial reef. She was sunk as such in June 1997 off British Columbia. Design The ''Mackenzie'' class was an offshoot of the design. Initially planned to be an improved version of the design, budget difficulties led to the Canadian government ordering a repeat of the previous ,Milner, pp. 223–224 with improved habitability and better pre-wetting, bridge and weatherdeck fittings to better deal with extreme cold.Gardiner & Chumbley, p. 45 The original intention was to give the ''Mackenzie'' class variable depth sonar during construction, but would have led to delays of up to a year in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CBC Radio
CBC Radio is the English-language radio operations of the Canadian Broadcasting Corporation. The CBC operates a number of radio networks serving different audiences and programming niches, all of which (regardless of language) are outlined below. English CBC Radio operates three English language networks. *CBC Radio One - Primarily news and information, Radio One broadcasts to most communities across Canada. Until 1997, it was known as "CBC Radio". * CBC Music - Broadcasts an adult music format with a variety of genres, with the classical genre generally restricted to midday hours. From 2007 to 2018, it was known as "CBC Radio 2". *CBC Radio 3 - Broadcasts a youth-oriented indie rock format on Internet radio and Sirius XM Radio. Some content from Radio 3 was also broadcast as weekend programming on Radio Two until March 2007. The inconsistency of branding between the word "One" and the numerals "2" and "3" was a deliberate design choice on CBC's part and is not an error, though ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hecate Strait
, image = HecateStrait(PittIsland).JPG , image_size = 260px , alt = , caption = Hecate Strait and Pitt Island , image_bathymetry = Loc-QCS-Hecate-Dixon.png , alt_bathymetry = , caption_bathymetry = Hecate Strait as delineated by BCGNIS, along with Queen Charlotte Sound and Dixon Entrance. Red dots indicate capes and points, gray text indicates island names. , location = British Columbia, Canada , group = , coordinates = , type = , etymology = , part_of = , inflow = , rivers = , outflow = , oceans = Pacific Ocean , catchment = , basin_countries = , agency = , designation = , length = , width = , area = , depth = , max-depth = , volume = , residence_time = , salinit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponge Reef Project
The Sponge Reef Project is a binational scientific project between Germany and Canada to study the sponge reefs off British Columbia, Canada, reefs formed by sponges of the Hexactinellid family. The project was started in 1999, following the discovery of the reefs in 1991; earlier, this reef type was thought to have existed mainly in the Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ... period. External linksThe Sponge Reef Project [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington (state)
Washington (), officially the State of Washington, is a state in the Pacific Northwest region of the Western United States. Named for George Washington—the first U.S. president—the state was formed from the western part of the Washington Territory, which was ceded by the British Empire in 1846, by the Oregon Treaty in the settlement of the Oregon boundary dispute. The state is bordered on the west by the Pacific Ocean, Oregon to the south, Idaho to the east, and the Canadian province of British Columbia to the north. It was admitted to the Union as the 42nd state in 1889. Olympia is the state capital; the state's largest city is Seattle. Washington is often referred to as Washington state to distinguish it from the nation's capital, Washington, D.C. Washington is the 18th-largest state, with an area of , and the 13th-most populous state, with more than 7.7 million people. The majority of Washington's residents live in the Seattle metropolitan area, the center of trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Columbia
British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, forests, lakes, mountains, inland deserts and grassy plains, and borders the province of Alberta to the east and the Yukon and Northwest Territories to the north. With an estimated population of 5.3million as of 2022, it is Canada's third-most populous province. The capital of British Columbia is Victoria and its largest city is Vancouver. Vancouver is the third-largest metropolitan area in Canada; the 2021 census recorded 2.6million people in Metro Vancouver. The first known human inhabitants of the area settled in British Columbia at least 10,000 years ago. Such groups include the Coast Salish, Tsilhqotʼin, and Haida peoples, among many others. One of the earliest British settlements in the area was Fort Victoria, established ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponge Reef
Sponge reefs are reefs formed by Hexactinellid sponges, which have a skeleton made of silica, and are often referred to as ''glass sponges''. Such reefs are now very rare, and found only in waters off the coast of British Columbia, Washington (state), Washington and southern Alaska. Recently sponge reefs were identified within the strait of Georgia and Howe Sound, Howe sound close to Vancouver. Although common in the late Jurassic period, reef-building sponges were believed to have gone extinct during or shortly after the Cretaceous period, until the existing reefs were discovered Queen Charlotte Sound / Tōtaranui, Queen Charlotte sound in 1987–1988 – hence these sometimes being dubbed living fossils. The reefs serve an important ecological function as habitat, breeding and nursery areas for fish and invertebrates but are currently threatened by the fishery, offshore oil and gas industries. Attempts are being made to protect these unique ecosystems through fishery closures ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenophoridae
Xenophoridae, commonly called carrier shells, is a family of medium-sized to large sea snails, marine gastropod mollusks in the clade Littorinimorpha. According to the taxonomy of the Gastropoda by Bouchet & Rocroi (2005) the family Xenophoridae has no subfamilies. Distribution The Xenophorids live on sand and mud bottoms of the continental shelves and the continental slopes of the subtropical and tropical seas and range from very shallow water to depths of more than 1,400 meters.Kreipl, K. & Alf, A. (1999): ''Recent Xenophoridae''. 148 pp. incl. 28 color plts. ConchBooks, Hackenheim, . Shell description Xenophorids are unusual in that in many of the species the animal cements small stones or shells to the edge of the shell as it grows, thus the shells of those species are sometimes humorously referred to as "shell-collecting shells". The genus name ''Xenophora'' comes from two ancient Greek words and means "bearing (or carrying) foreigners". The shells are small to rather ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Staurocalyptus
''Staurocalyptus'' is a genus of sponge. It was circumscribed in 1897 by Isao Ijima. Taxonomy Ijima circumscribed ''Staurocalyptus'' as a genus in the family Rossellidae. His initial taxonomy included three newly described species and two transferred from ''Rhabdocalyptus''. Ijimi did not designate a type species; in 1967 V. M. Koltun designated ''Rhabdocalyptus dowlingi'' as the type species. A 2002 revision of Rossellidae by K. R. Tabachnick demoted ''Staurocalyptus'' to be a subgenus of '' Acanthascus'' and designated a new type species: ''Staurocalyptus glaber'' . However, , WoRMS Worms may refer to: *Worm, an invertebrate animal with a tube-like body and no limbs Places *Worms, Germany Worms () is a city in Rhineland-Palatinate, Germany, situated on the Upper Rhine about south-southwest of Frankfurt am Main. It had ... still classifies ''Staurocalyptus'' as a genus and follows Koltun's type species designation, not that of Tabachnick. Distribution Its species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
