Answer by taking a quote from the following article:

James "Jimmy" William Buffett (born December 25, 1946) is an American musician, songwriter, author, actor, and businessman. He is best known for his music, which often portrays an "island escapism" lifestyle. Together with his Coral Reefer Band, Buffett has recorded hit songs including "Margaritaville" (ranked 234th on the Recording Industry Association of America's list of "Songs of the Century") and "Come Monday". He has a devoted base of fans known as "Parrotheads".

Buffett was born on December 25, 1946, in Pascagoula, Mississippi, and spent part of his childhood in Mobile, Alabama. He is the son of Mary Lorraine (nee Peets) and James Delaney Buffett, Jr. In grade school years, he attended St. Ignatius School, where he played the trombone in the school band. Buffett's grandfather was a sailor, therefore he was exposed to sailing as a child which had an early effect on his life and later in his music. He later lived in Fairhope, Alabama. He graduated from McGill Institute for Boys in 1964. He began playing guitar during his first year at Auburn University before continuing his college years at Pearl River Community College and the University of Southern Mississippi in Hattiesburg, Mississippi, where he received a bachelor's degree in history in 1969. He was initiated into the fraternity Kappa Sigma at the University of Southern Mississippi. After graduating from college, Buffett worked as a correspondent for Billboard magazine in Nashville, breaking the news of the separation of Flatt and Scruggs. Buffett married Margie Washichek in 1969 and divorced in 1971. Buffett spent years working as the first mate on the yacht of industrialist Foster Talge on the Petticoat III in Key West while perfecting the "Caribbean Rock n' Roll" genre. Buffett and his second wife, Jane (nee Slagsvol) have two daughters, Savannah Jane and Sarah Delaney, and an adopted son, Cameron Marley, and reside in Sag Harbor, New York. They separated in the early 1980s, but reconciled in 1991. Buffett also owns a home in St Barts, a Caribbean island where he lived on and off in the early 1980s while he was part owner of the Autour de Rocher hotel and restaurant. He spends part of the summer traveling about the East Coast on his sailboat. An avid pilot, Buffett owns a Dassault Falcon 900 that he often uses while on concert tour and traveling worldwide. He has also owned a Boeing Stearman, Lake Amphibian, and Grumman Albatross. His father died May 1, 2003, at the age of 83. His mother died a few months after her husband, on September 25, 2003. In 2015, Jimmy Buffett spoke at the University of Miami's graduation ceremony and received an honorary doctorate in music. Wearing flip flops and aviator sunglasses, he told graduates, in a paraphrase of his song "The Pascagoula Run", that "it's time to see the world, time to kiss a girl, and time to cross the wild meridian." Buffett wrote the soundtrack for, and co-produced and played a role in, the 2006 film Hoot, directed by Wil Shriner and based on the book by Carl Hiaasen, which focused on issues important to Buffett, such as conservation. The film was not a critical or commercial success. Among his other film music credits are the theme song to the short-lived 1993 CBS television series Johnny Bago; "Turning Around" for the 1985 film Summer Rental starring John Candy; "I Don't Know (Spicoli's Theme)" for the film Fast Times at Ridgemont High; "Hello, Texas" for the 1980 John Travolta film Urban Cowboy; and "If I Have To Eat Someone (It Might As Well Be You)" for the animated film FernGully: The Last Rainforest, which was sung in the film by rap artist Tone Loc. In addition, Buffett has made several cameo appearances, including in Repo Man, Hook, Cobb, Hoot, Congo, and From the Earth to the Moon. He also made cameo appearances as himself in Rancho Deluxe (for which he also wrote the music) and in FM. He made a guest appearance in the season two of Hawaii Five-0 on CBS in 2011. Buffett reportedly was offered a cameo role in Pirates of the Caribbean: The Curse of the Black Pearl, but declined the offer. In 1997, Buffett collaborated with novelist Herman Wouk on a musical production based on Wouk's 1965 novel Don't Stop the Carnival. In the South Park episode "Tonsil Trouble", an animated version of Buffett (but not voiced by Buffett) was seen singing "AIDSburger in Paradise" and "CureBurger in Paradise". Jimmy has also appeared on the Sesame Street special, Elmopalooza, singing "Caribbean Amphibian" with the popular Muppet, Kermit the Frog. Buffett appeared in an episode of Hawaii Five-0 in November 2011. He played a helicopter pilot named Frank Bama, a character from his novel Where Is Joe Merchant?. Another character mentioned that he preferred "margaritas"; Buffett's character replied, "Can't argue with you there." He reprised the role with a brief cameo visiting McGarret on the March 30, 2018 episode "E Ho'oko Kuleana". Buffett made a cameo in the 2015 film Jurassic World, where he is seen holding two margaritas while the dinosaurs are set loose in the park. In 2017, Buffett was the musical guest on the NCIS: New Orleans episode "Rogue Nation", playing the song "I Will Play for Gumbo" in Dwayne Pride's (Scott Bakula) newly rebuilt bar. Buffett has been involved in many charity efforts. In 1981 the Save the Manatee Club was founded by Buffett and former Florida governor Bob Graham. It is the world's leading manatee protection organization. West Indian Manatee In 1989, legislation was passed in Florida that introduced the "Save the Manatee" license plate, and earmarked funding for the Save the Manatee Club. One of the two manatees trained to interact with researchers at Mote Marine Laboratory is named Buffett after the singer. Buffett is also a longtime supporter of and major donor to the Gulf Specimen Marine Laboratory. On November 23, 2004, Buffett raised funds with his "Surviving the Storm" Hurricane Relief Concert in Orlando, Florida to provide relief for hurricane victims in Florida, Alabama and the Caribbean affected by the four major hurricanes that year. Buffett performed in Hong Kong on January 18, 2008 for a concert that raised US$63,000 for the Foreign Correspondents' Club Charity Fund. This was his first concert in Hong Kong and it sold out within weeks. Not only did Buffett perform for the groundlings for free, but he also paid for the concertgoers' tequila and beer. On July 11, 2010, Buffett, a Gulf Coast native, put on a free concert on the beach in Gulf Shores, Alabama. The concert was Buffett's response to the BP oil disaster in the Gulf. The concert was aired on CMT television. The 35,000 free tickets were given away within minutes to help draw people back to Alabama's beaches. Buffett played several popular songs including "Fins", "Son of a Son of a Sailor", "A Pirate Looks at Forty" and modified versions of "Margaritaville" (where the lyrics were changed in the chorus to "now I know, it's all BP's fault") and "When the Coast is Clear" (the lyrics in the chorus also referencing the Deepwater Horizon disaster: "That's when it always happens / When greed and crude collide"). The concert featured Jesse Winchester and Allen Toussaint. CANNOTANSWER

what made him want to save the manatees?

Buffett is also a longtime supporter of and major donor to the Gulf Specimen Marine Laboratory.