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Ocean Surgeonfish
The ocean surgeon or ocean surgeonfish (''Acanthurus bahianus'') is a tropical fish known to live in reefs in the western Atlantic Ocean, especially the Caribbean Sea. It is sometimes marketed fresh as a food item,Baensch, H.A. and H. Debelius (1997). ''Meerwasser atlas''. Mergus Verlag GmbH, Postfach 86, 49302, Melle, Germany. 3rd edition. but the Ocean surgeon is more often used as bait, or in tropical saltwater aquaria. Description Ocean surgeons are known by their oval bodies with uniform color (usually blue-gray to dark brown), the pale to dark marking around the eyes, and the light yellow is now found on their bodies. Most have blue or white markings on the dorsal fin, anal fin, and tail fins and pale bands can sometimes be seen at the base of their tails. They often swim in schools with other species such as the Atlantic blue tang surgeonfish. They have been recorded up to in length. Ocean surgeons have a total of 9 spines on their Dorsal fins and between 23 and 26 so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
François Louis De La Porte, Comte De Castelnau
François () is a French masculine given name and surname, equivalent to the English name Francis. People with the given name * Francis I of France, King of France (), known as "the Father and Restorer of Letters" * Francis II of France, King of France and King consort of Scots (), known as the husband of Mary Stuart, Queen of Scots * François Amoudruz (1926–2020), French resistance fighter * François-Marie Arouet (better known as Voltaire; 1694–1778), French Enlightenment writer, historian, and philosopher *François Aubry (other), several people *François Baby (other), several people * François Beauchemin (born 1980), Canadian ice hockey player for the Anaheim Duck *François Blanc (1806–1877), French entrepreneur and operator of casinos *François Boucher (other), several people *François Caron (other), several people * François Cevert (1944–1973), French racing driver * François Chau (born 1959), Cambodian American actor * F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shoaling And Schooling
In biology, any group of fish that stay together for social reasons are shoaling, and if the group is swimming in the same direction in a coordinated manner, they are schooling. In common usage, the terms are sometimes used rather loosely. About one quarter of fish species shoal all their lives, and about one half shoal for part of their lives. Fish derive many benefits from shoaling behaviour including defence against predators (through better predator detection and by diluting the chance of individual capture), enhanced foraging success, and higher success in finding a mate. It is also likely that fish benefit from shoal membership through increased hydrodynamic efficiency. Fish use many traits to choose shoalmates. Generally they prefer larger shoals, shoalmates of their own species, shoalmates similar in size and appearance to themselves, healthy fish, and kin (when recognized). The oddity effect posits that any shoal member that stands out in appearance will be preferen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascension Island
Ascension Island is an isolated volcanic island, 7°56′ south of the Equator in the South Atlantic Ocean. It is about from the coast of Africa and from the coast of South America. It is governed as part of the British Overseas Territory of Saint Helena, Ascension and Tristan da Cunha, of which the main island, Saint Helena, is around to the southeast. The territory also includes the sparsely populated Tristan da Cunha archipelago, to the south, about halfway to the Antarctic Circle. Named after the day of its recorded discovery, Ascension of Jesus, Ascension Island was an important safe haven as a coaling station to mariners and a refueling stop for commercial airliners back in the days of international air travel by flying boats. Ascension Island was garrisoned by the British Admiralty from 22 October 1815 to 1922. During World War II, it was an important naval and air station, especially providing antisubmarine warfare bases in the Battle of the Atlantic.Victory at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trindade And Martin Vaz
Trindade and Martim Vaz ( pt, Trindade e Martim Vaz, ) is an archipelago located in the South Atlantic Ocean about east of the coast of the Brazilian state of Espírito Santo, of which it forms a part. The archipelago has a total area of and a navy supported research station of up to 8 persons.The archipelago consists of five islands and several rocks and stacks; Trindade is the largest island, with an area of ; about east of it are the tiny Martim Vaz islets, with a total area of . The islands are of volcanic origin and have rugged terrain. They are largely barren, except for the southern part of Trindade. They were discovered in 1502 by Portuguese explorer Estêvão da Gama and stayed Portuguese until they became part of Brazil at its independence in 1822. From 1895 to 1896, Trindade was occupied by the United Kingdom until an agreement with Brazil was reached. During the period of British occupation, Trindade was known as South Trinidad. The islands are situated some sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atol Das Rocas
The Rocas Atoll ( pt, Atol das Rocas ) is the only atoll in the South Atlantic Ocean. It belongs to the Brazilian State of Rio Grande do Norte. It is located approximately northeast of Natal and west of the Fernando de Noronha archipelago. The atoll is of volcanic origin and coralline formation. Description The oval atoll is long and wide. The lagoon is up to deep and has an area of . The land area of the two islets (Cemitério Island, southwest and Farol Cay, northwest) is . Farol Cay accounts for almost two-thirds of the aggregate area. The highest point is a sand dune in the south of larger Farol Cay, with a height of . Both islets are overgrown with grasses, bushes and a few palm trees. The population consists of crabs, spiders, scorpions, sand fleas, beetles, large roaches, and many species of birds. There is a lighthouse of the Brazilian Navy that has been in operation and maintained since the 1960s, at the Northern end of Farol Bay. In its vicinity is a derelict light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fernando De Noronha
Fernando de Noronha () is an archipelago in the Atlantic Ocean, part of the State of Pernambuco, Brazil, and located off the Brazilian coast. It consists of 21 islands and islets, extending over an area of . Only the eponymous main island is inhabited; it has an area of and a population estimated at 3,101 in 2020. While the archipelago is relatively low-lying, there are parts stretching above in elevation. The islands are administratively unique in Brazil. They form a "state district" ( pt, distrito estadual) that is administered directly by the government of the state of Pernambuco (despite being closer to the state of Rio Grande do Norte). The state district's jurisdiction also includes the very remote Saint Peter and Saint Paul Archipelago, located northeast of Fernando de Noronha. Seventy percent of the islands' area was established in 1988 as a national marine park. In 2001, UNESCO designated it as a World Heritage Site because of its importance as a feeding ground for t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Catarina (state)
Santa Catarina (, ) is a States of Brazil, state in the South Region, Brazil, South Region of Brazil. It is the List of Brazilian states by area, 7th smallest state in total area and the List of Brazilian states by population, 11th most populous. Additionally, it is the 9th largest settlement, with List of municipalities in Santa Catarina, 295 municipalities. The state, with 3.4% of the Brazilian population, generates 3.8% of the national GDP. Santa Catarina is bordered by Paraná (state), Paraná to the north, Rio Grande do Sul to the south, the Atlantic Ocean to the east, and the Provinces of Argentina, Argentine province of Misiones Province, Misiones to the west. The coastline is over 450 km, i.e., about half of Portugal's mainland coast. The seat of the state executive, Legislature, legislative and judiciary powers is the capital Florianópolis. Joinville, however, is the most populous city in the state. Besides Espírito Santo, Santa Catarina is the only state whose ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maranhão
Maranhão () is a state in Brazil. Located in the country's Northeast Region, it has a population of about 7 million and an area of . Clockwise from north, it borders on the Atlantic Ocean for 2,243 km and the states of Piauí, Tocantins and Pará. The people of Maranhão have a distinctive accent inside the common Northeastern Brazilian dialect. Maranhão is described in books such as '' The Land of the Palm Trees'' by Gonçalves Dias and ''Casa de Pensão'' by Aluísio Azevedo. The dunes of Lençóis are an important area of environmental preservation. Also of interest is the state capital of São Luís, designated a Unesco World Heritage Site. Another important conservation area is the Parnaíba River delta, between the states of Maranhão and Piauí, with its lagoons, desert dunes and deserted beaches or islands, such as the Caju island, which shelters rare birds. Geography The northern portion of the state is a heavily forested plain traversed by numerous rivers, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazil
Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area and the seventh most populous. Its capital is Brasília, and its most populous city is São Paulo. The federation is composed of the union of the 26 States of Brazil, states and the Federal District (Brazil), Federal District. It is the largest country to have Portuguese language, Portuguese as an List of territorial entities where Portuguese is an official language, official language and the only one in the Americas; one of the most Multiculturalism, multicultural and ethnically diverse nations, due to over a century of mass Immigration to Brazil, immigration from around the world; and the most populous Catholic Church by country, Roman Catholic-majority country. Bounded by the Atlantic Ocean on the east, Brazil has a Coastline of Brazi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Algae
Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular microalgae, such as ''Chlorella,'' ''Prototheca'' and the diatoms, to multicellular forms, such as the giant kelp, a large brown alga which may grow up to in length. Most are aquatic and autotrophic (they generate food internally) and lack many of the distinct cell and tissue types, such as stomata, xylem and phloem that are found in land plants. The largest and most complex marine algae are called seaweeds, while the most complex freshwater forms are the ''Charophyta'', a division of green algae which includes, for example, ''Spirogyra'' and stoneworts. No definition of algae is generally accepted. One definition is that algae "have chlorophyll ''a'' as their primary photosynthetic pigment and lack a sterile covering of cells around thei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coral Reefs
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of Colony (biology), colonies of coral polyp (zoology), polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups. Coral belongs to the Class (biology), class Anthozoa in the animal phylum Cnidaria, which includes sea anemones and jellyfish. Unlike sea anemones, corals secrete hard carbonate exoskeletons that support and protect the coral. Most reefs grow best in warm, shallow, clear, sunny and agitated water. Coral reefs first appeared 485 million years ago, at the dawn of the Early Ordovician, displacing the microbial and sponge reefs of the Cambrian. Sometimes called ''rainforests of the sea'', shallow coral reefs form some of Earth's most diverse ecosystems. They occupy less than 0.1% of the world's ocean area, about half the area of France, yet they provide a home for at least 25% of all marine species, including fis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsal Fin
A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom. Many species of animals possessing dorsal fins are not particularly closely related to each other, though through convergent evolution they have independently evolved external superficial fish-like body plans adapted to their marine environments, including most numerously fish, but also mammals such as cetaceans (whales, dolphins, and porpoises), and even extinct ancient marine reptiles such as various known species of ichthyosaurs. Most species have only one dorsal fin, but some have two or three. Wildlife biologists often use the distinctive nicks and wear patterns which develop on the dorsal fins of large cetaceans to identify individuals in the field. The bony or cartilaginous bones that support the base of the dorsal fin in fish are called ''pterygiophores''. Functions The main purpose of the dorsal fin is to stabilize the animal against rollin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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