Diving in the Land of Aloha: The Hawaiian Islands

The Hawaiian Island of Oahu: The Gathering Place

Hanauma Bay

The Big Kahunas: Hawaii’s Sharks


Island Divers Hawaii


  • Location: An island in the Hawaiian archipelago, Oahu is northwest of Molokai and southeast of Kauai.
  • Size: The third-largest island of the Hawaiian Islands and the 20th-largest in the United States, Oahu covers an area of 607 square miles (1,578 sq km). Oahu is 44 miles (70 km) long and 30 miles (48 km) wide, and has 227 miles (363 km) of shoreline.
  • Population: 953,207, according to the 2010 census. Partly due to this fact, Oahu is nicknamed The Gathering Place.
  • Language: English and Hawaiian.
  • Beaches: Oahu is abundantly blessed with numerous beaches with public access. Many have lifeguards and public facilities, while others are far more remote.
  • Accommodations: Variety including traditional hotels, bed-and-breakfasts, condominiums, cottages, vacation rentals and exclusive spas widely dispersed in coastal areas.
  • Time: Oahu Standard Time is Greenwich meantime minus 10 hours. Oahu is two hours behind Pacific Standard Time and five hours behind Eastern Standard Time. Hawaii does not observe daylight-saving time, so when daylight saving-time is in effect on the U.S. mainland, Oahu is an additional hour behind.
  • Entry requirements: For U.S. citizens conditions of entry are the same as they are to cross state lines in the continental United States, thus no passport or immigration clearance are required. For non-U.S. citizens requirements vary. Canadian citizens only need a passport.
  • Getting there: Several major airlines offer direct service from the U.S. mainland to Honolulu. Inter-island flights operate several times daily from the other major Hawaiian islands.
  • Area code and cell phone coverage: 808. Cell phone coverage is available in most places.