A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water, afterward excreting carbon dioxide. The gills of some species such as hermit crabs have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment.

Many microscopic aquatic animals, and some that are larger but inactive, can absorb adequate oxygen through the entire surface of their bodies, and so can respire adequately without a gill. However, more complex or more active aquatic organisms usually require a gill or gills.^{[citation needed]}

Gills usually consist of thin filaments of tissue, branches, or slender tufted processes that have a highly folded surface to increase surface area. A high surface area is crucial to the gas exchange of aquatic organisms as water contains only a small fraction of the dissolved oxygen that air does. A cubic meter of air contains about 250 grams of oxygen at STP. For a typical freshwater oxygen concentration of 5 parts per millon by mass, a cubic meter of water will contain 5 grams of oxygen. This is about 1/50th of the oxygen of the same volume of air.

Vincent Grant "Vince" Gill (born April 12, 1957) is an American country singer-songwriter and multi-instrumentalist. He has achieved commercial success and fame both as frontman to the country rock band Pure Prairie League in the 1970s, and as a solo artist beginning in 1983, where his talents as a vocalist and musician have placed him in high demand as a guest vocalist, and a duet partner. Gill has recorded more than twenty studio albums, charted over forty singles on the U.S. Billboard charts as Hot Country Songs, and has sold more than 22 million albums. He has been honored by the Country Music Association with 18 CMA Awards, including two Entertainer of the Year awards and five Male Vocalist Awards. Gill has also earned 27 Grammy Awards, more than any other male Country music artist. In 2007, Gill was inducted into the Country Music Hall of Fame.

Vincent Grant "Vince" Gill was born in Norman, Oklahoma. His father, J. Stanley Gill, was a lawyer and administrative law judge who played in a country music band part time and encouraged Gill to pursue a music career. At the encouragement of his father, Gill learned to play several instruments, including the banjo and guitar, before he started high school at Oklahoma City's Northwest Classen High School. He first played with a teenage band called Bluegrass Revues in the late 1970s. The other members were: Billy Perry on the banjo, Bobby Clark on the triangle and Mike Perry on the bass.

John Hughey (born December 27, 1933 in Elaine, Arkansas; died November 18, 2007 in Hendersonville, Tennessee) was an American musician. He was known for his work as a session pedal steel guitar player for various country music acts, most notably Vince Gill and Conway Twitty. A member of the Pedal Steel Guitar Hall of Fame, Hughey was known for a distinctive playing style called "crying steel", which focused primarily on the higher range of the guitar.

John Hughey was born December 27, 1933 in Elaine, Arkansas. He began playing guitar at age nine, when his parents bought him an acoustic guitar from Sears. In the seventh grade, he befriended a classmate named Harold Jenkins, who would later become a prominent country singer under his stage name Conway Twitty. (Hughey and Jenkins also attended high school together.)

Influenced by Eddy Arnold's steel guitarist, Little Roy Wiggins, Hughey asked his father to buy him a lap steel guitar. Along with Jenkins and other high school friends, Hughey performed in a local band called the Phillips County Ramblers. Hughey first played professionally as a member of Slim Rhodes and The Mother's Best Mountaineers, a Memphis, Tennessee-based band. After leaving this band, Hughey joined Twitty on the road as his pedal steel guitarist, and backed Twitty from 1968 to 1988. He also recorded with various other acts, such as Marty Stuart, Willie Nelson, Elvis Presley, and Dickey Betts. By the 1980s, he began playing for Loretta Lynn, then moved on to play steel for Vince Gill for twelve years. Hughey was inducted into the Steel Guitar Hall of Fame in 1996. In the 2000s, he and several other Nashville musicians formed a Western swing band called The Time Jumpers, who performed every Monday at a club in Nashville.

Surveen Chawla is an Indian actress, best known for hosting the television show Comedy Circus Ke SuperStars.

Surveen made her debut as Charu in the Balaji Telefilms serial Kahin To Hoga. She then played the role of Kasak in Kasautii Zindagi Kay. She also played the lead role in Kaajjal.

Surveen was seen in the reality dance show Ek Khiladi Ek Haseena, where she paired up with Indian cricketer S. Sreesanth. The first of the three films, titled Carry On Pandu, will see her playing the female lead opposite Ranvir Shorey. She hosted Comedy Circus ke Superstars on Sony. In 2011, she appeared in her first Punjabi film opposite Jimmy Shergill named Dharti which released in April 2011. The film won six prizes at the 2nd PTC Punjabi Film Awards. Surveen was given the Best Female Debutante Award.

Apart from being an actress, Surveen has appeared in television commercials, magazine covers and print advertisements.

Amrinder Gill (Punjabi: ਅਮਰਿੰਦਰ ਗਿੱਲ) is a Punjabi singer and an actor.

He was born and raised in Boorchand village, Amritsar, Punjab. He has a master's degree in agriculture science. He was passionate about singing since his childhood, and came into the public limelight with his breakthrough track “Paigam,” followed by such hits such like “Daru,” “Madhaania,” “Khedan De Din,” with Sunidhi Chauhan, and many others like “Mail Kara De” and “Dildarian.”

He made his acting debut in director Manmohan Singh's superhit Punjabi Film Munde U.K. De in 2009 in a supporting role with Jimmy Shergill and Neeru Bajwa. He followed that up with a lead role in Manmohan Singh's Ik Kudi Punjab Di. His next film Taur Mittran Di for Jimmy Shergill productions releases in May 2012 which pairs him with actress Surveen Chawla and costars MTV VJ and Bollywood actor Rannvijay Singh. His next movie underproduction is Tu Mera 22 Man Tera 22 which pairs him with Punjabi rapper Honey Singh and actress Mandy Takhar

Amrinder Gill has been featured on a few Punjabi Film Soundtracks: