Question: Blue Crush is a 2002 sports film that tells the story of three friends who have one passion: living the ultimate dream of surfing on a beach located on which island ?

Context paragraphs:
Jungmun Saekdal Beach: Jungmun Saekdal Beach is a beach located in Jungmun Tourist Complex, Saekdal-dong, in the city of Seogwipo-si, South Korea.  The beach is 560 meters long and 50 meters wide, and the sand features a variety of colors, including black, white, red, and gray.  In 1999, by a result of an environmental water quality investigation conducted by the Korean Federation for Environmental Movement, Jungmun Saekdal Beach was chosen as the best uncontaminated beach among 44 beaches in South Korea.  Jungmun Saekdal Beach holds many events like the Winter Sea Penguin Swimming Competition, Summer Shore Movie Expo, and the International Surfing Competition.

Blue Crush: Blue Crush is a 2002 sports film directed by John Stockwell and based on Susan Orlean's "Outside" magazine article "Life's Swell".  The film stars Kate Bosworth, Michelle Rodriguez, Sanoe Lake and Mika Boorem, and tells the story of three friends who have one passion: living the ultimate dream of surfing on Hawaii's famed North Shore.

Matt Warshaw: Matt Warshaw (Los Angeles, 1960) is a former professional surfer, former writer and editor at "Surfer" magazine (1984-1990), and the author of dozens of feature articles and large-format books on surfing culture and history.  He is currently the curator of the online "Encyclopedia of Surfing" and "History of Surfing", each website based on expanded material from the archives assembled for their print companions.  Born in Los Angeles and raised in Venice Beach and Manhattan Beach, at his competitive peak Warshaw was the second-ranked amateur in California and 43rd-ranked professional on the International Professional Surfers world tour (1982).  After stints as a student at several Southern California community colleges and San Diego State University while still a competitive surfer, Warshaw earned a B.A. in History from the University of California, Berkeley (1992).  After finishing his degree at Berkeley, Warshaw briefly aspired to a career in academia, enrolling in the graduate program in History at UCLA.  He quit after three weeks.  He is famously quoted as saying "All I knew when I quit [graduate school at UCLA] was that I was going to make a living writing about surfing, and as a matter of vanity, I wanted to be the world's authority on it."  Today he is widely recognized as one of the world's foremost historians of surfing, living up to a 2005 feature on his work that named him "the caretaker of surfing history."

Rochelle Ballard: Rochelle Ballard (born February 13, 1971) is an American professional surfer and a veteran of the Association of Surfing Professional’s (ASP) World Championship Tour.  Due to her natural and skilled barrel riding technique, she is considered the best female barrel rider in the world.  Through her passion, courage and skill, Rochelle has been a pioneer for the advancement of Women's surfing over the past two decades.  Ballard's mastery of big waves and support of women's surfing, rank her among surfing history's most elite.  She also co-founded International Women's Surfing (IWS) and has appeared in several movies and television shows, most notably "Blue Crush," "Step Into Liquid," and Beyond the Break.  In 2012, she became the ISA World Masters World Champion.  During her years on tour, Ballard won 7 world championship events and in 2004, she was runner-up to the World Championship title.  In 1997, at the Billabong Pro at Burleigh Heads, Gold Coast, Australia, Rochelle scored two perfect 10 barrel rides against Layne Beachley in the semifinals and went on to win the event, after beating Lisa Anderson in the finals.  To this day, Ballard still holds the women's world record for scoring two perfect 10s in a single heat.

Blue Crush 2: Blue Crush 2 is a 2011 direct-to-video film directed by Mike Elliott, and stars Sasha Jackson, Elizabeth Mathis, Ben Milliken, Chris Fisher, Gideon Emery and Sharni Vinson. It is not a sequel to the 2002 film "Blue Crush".  Film reviews were generally negative.

North Shore (Oahu): The North Shore, in the context of geography of the Island of Oʻ ahu, refers to the north-facing coastal area of Oʻ ahu between Kaʻ ena Point and Kahuku Point.

Manevri na petiya etazh: Three colleagues and devoted friends – Danton, Petar and Andrey – share an office and not only on the fifth floor of a socialist industrial research institute from the mid-eighties.  Every morning when they come to work they lock the door of the office and, armed with binoculars and great interest, they begin watching the aerobics exercises of a young girl in the nearby building.  Suddenly, their tranquil daily round is disturbed - a new director takes over the Institute and decides to develop close scientific partnerships with similar institutes in Japan.  A rumor has it that one of our three friends will go on a business trip there.  But who?  The three friends are now rivals.  "Homo homini lupus est"!  All the three undertake sophisticated underground maneuvers in order to get the prize.  Everything is at stake!  There is only one rule and it is there are NO rules!  At the end, of course, it turns out everything has been in vain.  The one to go to Japan is the director. <br>Numerous situations filled with humor follow and, at the very end, after the grotesque outcome, we can see the three friends together again.  But this time, much wiser… perhaps.

Sonny Miller: Sonny Miller (July 18, 1960 - July 8, 2014) was an American cinematographer and waterman specializing in surfing and nature photography.  He achieved success filming surfing related dramas, "In God's Hands" (1998). " Riding Giants" (2004), "The Big Bounce" (2004), "Lords of Dogtown" (2005), "Blue Crush" (2002) and "Die Another Day".  Miller experienced a heart attack and could not be revived just one week after the passing of his mother, Suzanne Gilliland.

East Coast Surfing Championships: The East Coast Surfing Championships (ECSC) is an annual surfing contest held in Virginia Beach, Virginia on the oceanfront, and is one of the United States Surfing Federation’s major amateur events.  The ECSC stretches over a four-day period every year in late August at the Virginia Beach Oceanfront.  The original inspiration for the East Coast Surfing Championships came from Long Island, New York in the summer of 1962 when a group of teens held a beach and surf party.  Since its official establishment in Virginia Beach in 1963, the ECSC has grown to be the second-longest running surfing contest in the world.

Lumaha'i Beach: Lumaha'i Beach (Hawaiian: "Lumahaʻ i") is a beach located on the north shore of Kauai, Hawaii, US.  Situated at the mouth of Lumaha'i River, is accessed along Hawaii Route 56 between Hanalei and Ha'ena State Park.  Due to strong waves, currents and undertow, the beach and bay are considered unsafe for swimming and surfing most of the year.  Bread fruit trees are said to have been planted here by a Menehune named Weli.  Lumaha'i Beach was featured in the 1958 film "South Pacific".

Supporting paragraphs: Blue Crush North Shore (Oahu)
Answer: Island of Oʻ ahu