Coral
Pillar coral, Dendrogyra cylindricus
Scientific classification
Kingdom:	Animalia
Phylum:	Cnidaria
Class:	Anthozoa Ehrenberg, 1831
Extant Subclasses and Orders
Alcyonaria    Alcyonacea    Helioporacea Zoantharia    Antipatharia    Corallimorpharia    Scleractinia    Zoanthidea [1][2]  See Anthozoa for details

Corals are marine animals in class Anthozoa of phylum Cnidaria typically living in compact colonies of many identical individual "polyps". The group includes the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton.

A coral "head" is a colony of myriad genetically identical polyps. Each polyp is a spineless animal typically only a few millimeters in diameter and a few centimeters in length. A set of tentacles surround a central mouth opening. An exoskeleton is excreted near the base. Over many generations, the colony thus creates a large skeleton that is characteristic of the species. Individual heads grow by asexual reproduction of polyps. Corals also breed sexually by spawning: polyps of the same species release gametes simultaneously over a period of one to several nights around a full moon.

Although corals can catch small fish and plankton, using stinging cells on their tentacles, most corals obtain the majority of their energy and nutrients from photosynthetic unicellular algae called zooxanthellae that live within the coral's tissue. Such corals require sunlight and grow in clear, shallow water, typically at depths shallower than 60 metres (200 ft). Corals can be major contributors to the physical structure of the coral reefs that develop in tropical and subtropical waters, such as the enormous Great Barrier Reef off the coast of Queensland, Australia. Other corals do not have associated algae and can live in much deeper water, with the cold-water genus Lophelia surviving as deep as 3,000 metres (9,800 ft).^[3] Examples live on the Darwin Mounds located north-west of Cape Wrath, Scotland. Corals have also been found off the coast of the U.S. in Washington State and the Aleutian Islands in Alaska.

Taxonomy[link]

A short tentacle plate coral in Papua New Guinea

Corals divide into two subclasses, depending on the number of tentacles or lines of symmetry, and a series of orders corresponding to their exoskeleton, nematocyst type and mitochondrial genetic analysis.^[1][2][4] Common coral typing crosses suborder/class boundaries.

Hermatypic corals[link]

Hermatypic corals in the subclass Scleractinia are stony corals that build reefs. They mostly obtain at least part of their energy requirements from zooxanthellae, symbiotic photosynthetic microalgae. They secrete calcium carbonate to form a hard skeleton. Those having six or fewer lines of symmetry in their body structure are called hexacorallia or Zoantharia. This group includes reef-building corals (scleractinians), sea anemones and zoanthids. Hermatypic genera include Scleractinia, Millepora, Tubipora and Heliopora.^[5]

In the Caribbean alone, at least 50 species of uniquely structured hard coral exist. Well-known types include:

• Brain corals grow to 1.8 meters (5.9 ft) in width.
• Acropora and staghorn corals grow fast and large, and are important reef-builders. Staghorn coral displays large, antler-like branches, and grows in areas with strong surf.
• Pillar coral forms pillars which can grow to 3 meters (9.8 ft) in height.
• Leptopsommia, or rock coral, appears almost everywhere in the Caribbean.^[6]

Ahermatypic corals[link]

Ahermatypic corals have no zooxanthellae. They sport eight tentacles and are also called octocorallia. They include corals in subclass Alcyonacea, as well as some species in order Anthipatharia (black coral, Cirripathes, Antipathes).^[5] Ahermatypic corals, such as sea whips, sea feathers, and sea pens,^[6] are also known as soft corals. Unlike stony corals, they are flexible, undulating in the current, and often are perforated, with a lacy appearance. Their skeletons are proteinaceous, rather than calcareous. Soft corals are somewhat less plentiful (in the Caribbean, twenty species appear) than stony corals.

Perforate corals[link]

Corals can be perforate or imperforate. Perforate corals have porous skeletons, which allows their polyps to connect with each other through the skeleton. Imperforate corals have hard solid skeletons.^[7][8]

Anatomy[link]

Anatomy of a coral polyp

People believed coral to be a plant until the 18th century, when William Herschel used a microscope to establish that coral had the characteristic thin cell membranes of an animal.^[9]

Colonial form[link]

The polyps interconnect by a complex and well-developed system of gastrovascular canals, allowing significant sharing of nutrients and symbiotes. In soft corals, these range in size from 50–500 micrometres (0.0020–0.020 in) in diameter, and allow transport of both metabolites and cellular components.^[10]

Close-up of Montastraea cavernosa polyps, the tentacles are clearly visible.

Polyp[link]

While the coral head is the familiar visual form of a single organism, it is actually a group of many individual, yet genetically identical, multicellular organisms known as polyps. Polyps are usually a few millimeters in diameter, and are formed by a layer of outer epithelium and inner jellylike tissue known as the mesoglea. They are radially symmetrical, with tentacles surrounding a central mouth, the only opening to the stomach or coelenteron, through which food is ingested and waste expelled.

Exoskeleton[link]

The stomach closes at the base of the polyp, where the epithelium produces an exoskeleton called the basal plate or calicle (L. small cup). The calicle is formed by a thickened calcareous ring (annular thickening) with six supporting radial ridges (as shown below). These structures grow vertically and project into the base of the polyp. When a polyp is physically stressed, its tentacles contract into the calyx so that virtually no part is exposed above the skeletal platform. This protects the organism from predators and the elements.^[11][12]

The polyp grows by extension of vertical calices which occasionally septate to form a new, higher, basal plate. Over many generations, this extension forms the large calcareous structures of corals and ultimately coral reefs.

Formation of the calcareous exoskeleton involves deposition of the mineral aragonite by the polyps from calcium and carbonate ions they acquire from seawater. The rate of deposition, while varying greatly across species and environmental conditions, can reach 10 g/m² of polyp/day (0.3 ounce/sq yd/day). This is light dependent, with night-time production 90% lower than that during the middle of the day.^[13]

Nematocyst discharge: A dormant nematocyst discharges response to nearby prey touching the cnidocil, the operculum flap opens, and its stinging apparatus fires the barb into the prey, leaving a hollow filament through which poisons are injected to immobilise the prey, then the tentacles manoeuvre the prey to the mouth.

Tentacles[link]

Nematocysts at the tips of the calices are stinging cells that carry venom which they rapidly release in response to contact with another organism. The tentacles also bear a contractile band of epithelium called the pharynx. Jellyfish and sea anemones also carry nematocysts.

Ecology[link]

Feeding[link]

Polyps feed on a variety of small organisms, from microscopic plankton to small fish. The polyp's tentacles immobilize or kill prey using their nematocysts (also known as 'cnidocysts'). The tentacles then contract to bring the prey into the stomach. Once the prey is digested, the stomach reopens, allowing the elimination of waste products and the beginning of the next hunting cycle.

Zooxanthellae symbiote[link]

Many corals, as well as other cnidarian groups such as Aiptasia (a sea anemone) form a symbiotic relationship with a class of algae, zooxanthellae, of the genus Symbiodinium. Aiptasia, a familiar pest among coral reef aquarium hobbyists, serves as a valuable model organism in the study of cnidarian-algal symbiosis. Typically, each polyp harbors one species of algae. Via photosynthesis, these provide energy for the coral, and aid in calcification.^[14] The algae benefit from a safe place to live and consume the polyp's carbon dioxide and nitrogenous waste. Due to the strain the algae can put on the polyp, stress on the coral often drives them to eject the algae. Mass ejections are known as coral bleaching, because the algae contribute to coral's brown coloration; other colors, however, are due to host coral pigments, such as green fluorescent proteins (GFPs). Ejection increases the polyp's chance of surviving short-term stress—they can regain algae, possibly of a different species at a later time. If the stressful conditions persist, the polyp eventually dies.^[15]

Reproduction[link]

Corals can be both gonochoristic (unisexual) and hermaphroditic, each of which can reproduce sexually and asexually. Reproduction also allows coral to settle in new areas.

Sexual[link]

Corals predominantly reproduce sexually. About 25% of hermatypic corals (stony corals) form single sex (gonochoristic) colonies, while the rest are hermaphroditic.^[16]

Broadcasters[link]

About 75% of all hermatypic corals "broadcast spawn" by releasing gametes—eggs and sperm—into the water to spread offspring. The gametes fuse during fertilization to form a microscopic larva called a planula, typically pink and elliptical in shape. A typical coral colony forms several thousand larvae per year to overcome the odds against formation of a new colony.^[17]

A male star coral, Montastraea cavernosa, releases sperm into the water.

Synchronous spawning is very typical on the coral reef, and often, even when multiple species are present, all corals spawn on the same night. This synchrony is essential so male and female gametes can meet. Corals rely on environmental cues, varying from species to species, to determine the proper time to release gametes into the water. The cues involve temperature change, lunar cycle, day length, and possibly chemical signalling.^[16] Synchronous spawning may form hybrids and is perhaps involved in coral speciation.^[18] The immediate cue is most often sunset, which cues the release.^[16] The spawning event can be visually dramatic, clouding the usually clear water with gametes.

Brooders[link]

Brooding species are most often ahermatypic (not reef-building) in areas of high current or wave action. Brooders release only sperm, which is negatively buoyant, sinking on to the waiting egg carriers who harbor unfertilized eggs for weeks. Synchronous spawning events sometimes occurs even with these species.^[16] After fertilization, the corals release planula that are ready to settle.^[14]

Planulae[link]

Planulae exhibit positive phototaxis, swimming towards light to reach surface waters, where they drift and grow before descending to seek a hard surface to which they can attach and begin a new colony. They also exhibit positive sonotaxis, moving towards sounds that emanate from the reef and away from open water.^[19] High failure rates afflict many stages of this process, and even though millions of gametes are released by each colony, few new colonies form. The time from spawning to settling is usually two to three days, but can be up to two months.^[20] The larva grows into a polyp and eventually becomes a coral head by asexual budding and growth.

Asexual[link]

Calices (basal plates) of Orbicella annularis showing multiplication by gemmation (small central calice) and division (large double calice)

The tabulate coral Aulopora (Devonian) showing initial budding from protocorallite

Within a coral head, the genetically identical polyps reproduce asexually, either via gemmation (budding) or by longitudinal or transversal division, both shown in the photo of Orbicella annularis.

Budding involves splitting a smaller polyp from an adult.^[17] As the new polyp grows, it forms its body parts. The distance between the new and adult polyps grows, and with it, the coenosarc (the common body of the colony; see coral anatomy). Budding can be:

• Intratentacular—from its oral discs, producing same-sized polyps within the ring of tentacles
• Extratentacular—from its base, producing a smaller polyp

Division forms two polyps each as large as the original. Longitudinal division begins when a polyp broadens and then divides its coelenteron, analogous to splitting a log along its length. The mouth also divides and new tentacles form. The two "new" polyps then generate their missing body parts and exoskeleton. Transversal division occurs when polyps and the exoskeleton divide transversally into two parts. This means one has the basal disc (bottom) and the other has the oral disc (top), similar to cutting the end off a log. The new polyps must separately generate the missing pieces.

Asexual reproduction has several benefits for these sessile colonial organisms:^[21]

• Cloning allows high reproduction rates, supporting rapid habitat exploitation.
• Modular growth allows biomass to increase without a corresponding decrease in surface-to-volume ratio.
• Modular growth delays senescence, by allowing the clone-type to survive the loss of one or more modules.
• New modules can replace dead modules, reducing clone-type mortality and preserving the colony's territory.
• Spreading the clone type to distant locations reduces clone-type mortality from localized threats.

Colony division[link]

Whole colonies can reproduce asexually, forming two colonies with the same genotype.^{[citation needed]}

• Fission occurs in some corals, especially among the family Fungiidae, where the colony splits into two or more colonies during early developmental stages.
• Bailout occurs when a single polyp abandons the colony and settles on a different substrate to create a new colony.
• Fragmentation involves individuals broken from the colony during storms or other disruptions. The separated individuals can start new colonies.

Reefs[link]

Locations of coral reefs

The hermatypic, stony corals are often found in coral reefs, large calcium carbonate structures generally found in shallow, tropical water. Reefs are built up from coral skeletons, and are held together by layers of calcium carbonate produced by coralline algae. Reefs are extremely diverse marine ecosystems hosting over 4,000 species of fish, massive numbers of cnidaria, mollusks, crustacea, and many other animals.^[22]

Evolutionary history[link]

This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (November 2011)

Solitary rugose coral (Grewingkia) in three views; Ordovician, southeastern Indiana

Left frame

Right frame

Parallel view

Cross-eye view

Horn coral fossil.

Although corals first appeared in the Cambrian period,^[23] some 542 million years ago, fossils are extremely rare until the Ordovician period, 100 million years later, when rugose and tabulate corals became widespread.

Tabulate corals occur in limestones and calcareous shales of the Ordovician and Silurian periods, and often form low cushions or branching masses alongside rugose corals. Their numbers began to decline during the middle of the Silurian period, and they became extinct at the end of the Permian period, 250 million years ago. The skeletons of tabulate corals are composed of a form of calcium carbonate known as calcite.

Rugose corals became dominant by the middle of the Silurian period, and became extinct early in the Triassic period. The rugose corals existed in solitary and colonial forms, and were also composed of calcite.

The scleractinian corals filled the niche vacated by the extinct rugose and tabulate species. Their fossils may be found in small numbers in rocks from the Triassic period, and became common in the Jurassic and later periods. Scleractinian skeletons are composed of a form of calcium carbonate known as aragonite.^[24] Although they are geologically younger than the tabulate and rugose corals, their aragonitic skeleton is less readily preserved, and their fossil record is less complete.

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At certain times in the geological past, corals were very abundant. Like modern corals, these ancestors built reefs, some of which ended as great structures in sedimentary rocks.

Fossils of fellow reef-dwellers algae, sponges, and the remains of many echinoids, brachiopods, bivalves, gastropods, and trilobites appear along with coral fossils. This makes some corals useful index fossils that enabled geologists to date the rocks in which they are found. Coral fossils are not restricted to reef remnants, and many solitary fossils may be found elsewhere, such as Cyclocyathus, which occurs in England's Gault clay formation.

A Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized coral, Hexagonaria percarinata. They are found predominantly in Michigan's Upper Peninsula, and the northwestern portion of Michigan's Lower Peninsula.

Status[link]

Threats[link]

A healthy coral reef has a striking level of biodiversity in many forms of marine life.

Coral reefs are under stress around the world.^[27] In particular, coral mining, agricultural and urban runoff, pollution (organic and inorganic), overfishing, blast fishing, disease, and the digging of canals and access into islands and bays are localized threats to coral ecosystems. Broader threats are sea temperature rise, sea level rise and pH changes from ocean acidification, all associated with greenhouse gas emissions.^[28] In 1998, 16% of the world's reefs died as a result of increased water temperature.^[29]

General estimates show approximately 10% of the world's coral reefs are dead.^[30][31][32] About 60% of the world's reefs are at risk due to human-related activities. The threat to reef health is particularly strong in Southeast Asia, where 80% of reefs are endangered.^{[citation needed]} Over 50% of the world's coral reefs may be destroyed by 2030; as a result, most nations protect them through environmental laws.^[33]

In the Caribbean and tropical Pacific, direct contact between ~40 to 70% of common seaweeds and coral causes bleaching and death to the coral via transfer of lipid–soluble metabolites.^[34] Seaweed and algae proliferate given adequate nutrients and limited grazing by herbivores such as parrotfish.

Water temperature changes of more than 1-2 degrees Celsius (1.8-3.6 degrees Fahrenheit) or salinity changes can kill coral. Under such environmental stresses, corals expel their zooxanthellae; without them coral tissues reveal the white of their skeletons, an event known as coral bleaching.^[35]

Submarine springs found along the coast of Mexico's Yucatán Peninsula produce water with a naturally low pH (a measure of acidity) providing conditions similar to those expected to become widespread as the oceans absorb carbon dioxide^{[citation needed]}. Surveys discovered multiple species of live coral that appeared to tolerate the acidity. The colonies were small and patchily distributed, and had not formed structurally complex reefs such as those that compose the nearby Mesoamerican Barrier Reef System.^[36]

Protection[link]

A diversity of corals

Marine Protected Areas (MPAs), Biosphere reserves, marine parks, national monuments world heritage status, fishery management and habitat protection can protect reefs from anthropogenic damage.^[37]

A section through a coral, dyed to determine growth rate

Many governments now prohibit removal of coral from reefs, and inform coastal residents about reef protection and ecology. While local action such as habitat restoration and herbivore protection can reduce local damage, the longer-term threats of acidification, temperature change and sea-level rise remain a challenge.^[28]

To eliminate destruction of corals in their indigenous regions, projects have been started to grow corals in non-tropical countries.^[38][39]

Relation to humans[link]

Local economies near major coral reefs benefit from an abundance of fish and other marine creatures as a food source. Reefs also provide recreational scuba diving and snorkeling tourism. These activities can damage coral.

In medicine, chemical compounds from corals are used for cancer, AIDS, pain, and other uses. Coral skeletons, e.g., Isididae are also used for bone grafting in humans.^[40]

Live coral is highly sought after for aquaria. Soft corals are easier to maintain in captivity than hard corals.^[41]

Jewelry[link]

Coral's many colors give it appeal for necklaces and other jewelry. Intensely red coral is prized as a gemstone. Sometimes called fire coral, it is not the same as fire coral. Red coral is very rare because of overharvesting.^{[citation needed]}

Construction[link]

Tabulate coral (a syringoporid); Boone limestone (Lower Carboniferous) near Hiwasse, Arkansas, scale bar is 2.0 cm

Coral reefs on land provide lime for use as building blocks ("coral rag"). Coral rag is an important local building material in places such as the East African coast.^{[citation needed]}

Climate research[link]

The annual growth bands in deep sea bamboo corals (Isididae) and others may be among the ocean's first organisms to display the effects of ocean acidification. They produce growth rings similar to those of trees, and can provide a view of changes in the condition in the deep sea over time.^[42] They allow geologists to construct year-by-year chronologies, a form of incremental dating, which underlie high-resolution records of past climatic and environmental changes using geochemical techniques.^[43]

Certain species form communities called microatolls, which are colonies whose top is dead and mostly above the water line, but whose perimeter is mostly submerged and alive. Average tide level limits their height. By analyzing the various growth morphologies, microatolls offer a low resolution record of sea level change. Fossilized microatolls can also be dated using radioactive carbon dating. Such methods can help to reconstruct Holocene sea levels.^[44]

Aquaculture[link]

Coral aquaculture, also known as coral farming or coral gardening, is the cultivation of corals for commercial purposes or coral reef restoration. Aquaculture is showing promise as a potentially effective tool for restoring coral reefs, which have been declining around the world.^[45][46][47] The process bypasses the early growth stages of corals when they are most at risk of dying. Coral seeds are grown in nurseries then replanted on the reef.^[48] Coral is farmed by coral farmers who live locally to the reefs and farm for reef conservation or for income. It is also farmed by scientists for research, by businesses for the supply of the live and ornamental coral trade and by private aquarium hobbyists.

See also[link]

• Bamboo coral
• Coral dermatitis
• Coral Triangle
• Organ pipe coral
• Sea Turtle Association of Japan, Kuroshima Research Station

Gallery[link]

Further images: commons:Category:Coral reefs and commons:Category:Coral

References[link]

Further reading[link]

• Coral Reefs The Ocean Portal by Smithsonian Institution.
• Coral, The Reef & Marine Aquarium Magazine. ISSN 1556-5769 Coral Magazine
• Book of Coral Propagation by Anthony Calfo. ISBN 0-9802365-0-9
• Coral Reefs of the World by Susan Wells
• Corals of the World: Biology and Field Guide by Surrey Redhill
• Marine Biology, An Ecological Approach, 6th edition, Nybakken, J.W. 2004. ISBN 0-8053-4582-5
• Indo-Pacific Coral Reef Field Guide by Allen, G.R & R. Steene. 1994. ISBN 981-00-5687-7
• Coral Reef Animals of the Indo-Pacific, Animals Life from Africa to Hawai‘i (invertebrates) by Gosliner, T., D. Behrens & G. Williams. 1996. ISBN 0-930118-21-9
• Tropical Pacific Invertebrates by Colin, P.L. & C. Arneson. 1995. ISBN 0-9645625-0-2
• Corals of Australia and the Indo-Pacific by Veron, J.E.N. 1993. ISBN 0-8248-1504-1
• The Evolution of Reef Communities by Fagerstrom, J.A. 1987. ISBN 0-471-81528-4
• A Reef Comes to Life. Creating an Undersea Exhibit by Segaloff, Nat, and Paul Erickson. 1991. ISBN 0-531-10994-1
• SeaWorld – Coral reef bibliography

External links[link]

Wikispecies has information related to: Coral

Wikimedia Commons has media related to: Coral or Anthozoa

• What is a coral?
• NOAA CoRIS – Coral Reef Biology
• NOAA Ocean Service Education – Corals
• University of Southern Mississippi – Coral Reef Resource Guide
• Hard Corals Order:Scleractinia From Gulf of Kutch
• Coral Reproduction at the Smithsonian Ocean Portal

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Jay Chou
Chou on the red carpet at the MTV Asia Aid, Bangkok, Thailand, 2005
Chinese name	周杰倫 (Traditional)
Chinese name	周杰伦 (Simplified)
Pinyin	Zhōu Jiélún (Mandarin)
Origin	Taiwan
Born	(1979-01-18) 18 January 1979 (age 33) Linkou, Taipei County, Taiwan
Other name(s)	Director Chou (周董)
Occupation	Singer-songwriter, composer, record producer, rapper, DJ, music video director, film director, music arranger, model, screenwriter, actor
Genre(s)	Pop, rock, R&B, hip pop
Instrument(s)	Vocals, guitar, bass, piano, violin, cello, drums, guzheng, keyboards, pipa, erhu, harmonica
Voice type(s)	tenor
Label(s)	Sony Music Taiwan (2008–present) JVR Music (2007–present) Alfa Music (1999–2007)
Years active	2000–present
Parents	Father: Zhou Yaozhong (周耀中) Mother: Ye Huimei (葉惠美)
Influenced	Nan Quan Mama
Official Website	Jay Chou@JVR Music
Awards Hong Kong Film Awards Best New Performer 2006 Initial D Best Original Film Song 2007 "Chrysanthemum Terrace" (Curse of the Golden Flower) Golden Horse Awards Best Newcomer 2005 Initial D Outstanding Taiwanese Film of the Year 2007 Secret Best Original Song 2007 "The Secret That Cannot Be Told" (Secret) Golden Melody Awards Best Mandarin Album 2001 Jay 2002 Fantasy 2004 Ye Hui Mei 2011 The Era Best Music Video 2009 "Mr. Magic" (Capricorn) Best Song of the Year 2008 "Blue and White Porcelain" (On the Run) 2009 "Fragrant Rice" (Capricorn) Best Composer 2002 "Love Before A.D." (Fantasy)[1] 2008 "Blue and White Porcelain" (On the Run) Best Producer 2002 Fantasy Best Single Producer 2007 Fearless EP Best Male Mandarin Artist 2009 Capricorn 2011 The Era Best Composer (Instrumental Category) 2008 "Piano Room" (Secret) Best Producer (Instrumental Category) 2008 Secret Original Movie Soundtrack (Secret) MTV Asia Awards Favorite Artist, Taiwan 2002, 2005 Other awards World Music Awards Best-Selling Chinese-Speaking Artist 2004, 2006, 2007, 2008 Shanghai Film Critics Awards 2007 Best Actor (Curse of the Golden Flower)

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Jay Chou; (born 18 January 1979)^[2] is a Taiwanese musician, singer-songwriter, music and film producer, actor and director. In 1998 he was discovered in a talent contest where he displayed his piano and song-writing skills. Over the next two years, he was hired to compose for popular Mandarin singers. Although he was trained in classical music, Chou combines Chinese and Western music styles to produce songs that fuse R&B, rock and pop genres. He composes all his own songs, as well as songs for other singers.

In 2000, Chou released his first album, titled Jay, under the record company Alfa Music. Since then he has released one album per year except in 2009, selling several million copies each. His music has gained recognition throughout Asia, most notably in regions such as Taiwan, China, Hong Kong, Japan, Malaysia, Indonesia, India, Singapore, Thailand, Vietnam and in overseas Asian communities. He has sold more than 28 million albums worldwide up to 2010.^[3] He debuted his acting career in Initial D (2005), for which he won Best Newcomer Actor in both the Hong Kong Film Awards and the Golden Horse Awards, and was nominated for Best Supporting Actor by Hong Kong Film Awards for his role in Curse of the Golden Flower (2006). He produced the theme song for the film Ocean Heaven starring Jet Li. His career now extends into directing and running his own record company JVR Music.

Career[link]

Jay Chou at the premiere of Secret in Seoul, South Korea, on 10 January 2008.

Jay Chou grew up in Linkou, Taipei County, Taiwan.^[4] Both his parents were secondary school teachers: his mother, Ye Hui Mei (Chinese: 葉惠美; pinyin: Yè Huìměi), taught fine arts, while his father, Zhou Yao Zhong (Chinese: 周耀中; pinyin: Zhōu Yàozhōng), was a biomedical researcher. His mother noticed his sensitivity to music and took him to piano lessons at the age of three.^[4] During his childhood, he was fascinated with capturing sounds and songs with his tape recorder, which he carried everywhere with him. In the third grade, he became interested in music theory and also started cello lessons. He is an only child and loved to play piano, imitate TV actors, and perform magic tricks. His favorite composer was, and still is to this day, Chopin. His parents divorced when he was 13, which caused him to become reclusive and introverted. Although he had friends, he often preferred to be alone, listening to music, contemplating and daydreaming. At Tamkang Senior High School, he majored in piano and minored in cello. He showed talent for improvisation, became fond of pop music and began to write songs.^[5][6]

Chou graduated from high school with inadequate grades for university, so he prepared for mandatory military service. However, a sports injury triggered by an unexplainable and severe back pain eventually led to the diagnosis of ankylosing spondylitis, a hereditary spine inflammation disease; as a result, he was exempted from conscription.^[7][8] Meanwhile, he found himself a job as a waiter. Without his knowing, his friend had entered both their names in a talent show called Super New Talent King. Chou played the piano accompaniment for his friend, whose singing was described as "lousy". Although they did not win, the show's host Jacky Wu—an influential character in Taiwan's entertainment business—happened to glance at Chou's music score and was impressed with its complexity. Wu hired him as a contract composer and paired him with the novice lyricist Vincent Fang.^[6]

Over the next two years he wrote songs for Mandarin pop artists, and also learned recording and sound mixing; his dedication was apparent as he even slept in the music studio. Wu's music studio was later sold to Alfa Music, and the new manager Yang Jun Rong asked him to release his own album. Chou already had an arsenal of songs he wrote for others but had been rejected, so among those he chose 10 for his debut CD Jay that was released in 2000. The album established his reputation as a musically gifted singer-songwriter whose style is a fusion of R&B, rap, classical music, and yet distinctly Chinese. His fame spread quickly in Chinese-speaking regions including countries throughout Southeast Asia.^[9][10][11] Since 2000, Chou has released one album per year, except the year 2009, each selling several million copies, and has been recognized with hundreds of awards.^[12] In 2003, he was the cover story of Time magazine (Asia version),^[6] acknowledging his influence on popular culture. He has held four world tours, "The One" (2002), "Incomparable" (2004), "Jay Chou The World Tours" (2007–2008) and "The Era" (2010–2011) performing in cities such as Taipei, Tokyo, Hong Kong, Beijing, Kuala Lumpur, Singapore, Las Vegas, Toronto and Vancouver. Unlike most singers, Chou has an enormous amount of creative control over his music.^[6] He is not only the songwriter but also the producer on all of his albums; since 2005 he is also the music director and also directs his own music videos.

Music[link]

Musical style[link]