Koko Marina Center is a shopping center in Hawaii Kai, East Oahu, featuring water sports activities, restaurants, shops, and services, located 20 minutes from Waikiki near Hanauma Bay.

Waikiki Dive Center is the first PADI 5-Star Instructor Development Center in Hawaii and the only full-service dive shop in Waikiki, providing scuba diving certification courses, guided dive tours, equipment rentals, repairs, and snorkeling packages since 1979. They operate United States Coast Guard-certified vessels including Snoopy V (up to 13 passengers) and Submariner (up to 25 passengers), specializing in small groups with no more than six participants per instructor, offering wreck and reef dives, night dives, and multilingual instruction in English, Spanish, Japanese, Korean, Mandarin, Cantonese, and Portuguese.

Trident Adventures is a Navy SEAL owned and operated adventure company based in Honolulu, Hawaii, specializing in scuba diving, snorkeling, skin diving, helicopter jumping, live fire gun range shooting, hunting, night vision training, and leadership/team building events. It emphasizes safety, professional excellence, unique bucket list activities, PADI 5-Star IDC training, and VA-approved programs with top-of-the-line equipment.

Kewalo Basin Harbor is Honolulu's premier harbor, home to an elite commercial charter fishing fleet and excursion vessels serving the Hawaii tourist market. It offers a range of half, 3/4, and full-day charters (4-10 hours) as shared or exclusive options, including fishing, sailing, snorkeling, scuba diving, whale watching, sunset sails, and boat tours from various operators like Waikiki Sport Fishing, Hawaii Nautical, Honolulu Sailing Co., and others.

Dive Oahu is Honolulu's premier dive shop and one of the largest dive centers on Oahu, operating for over 25 years with PADI-certified instructors. They specialize in scuba diving tours including wreck and reef dives on South Shore (Waikiki) and West Oahu (Waianae), private scuba and snorkel charters, beach services like snorkel and surfboard rentals at Waikiki and Hanauma Bay, and outrigger canoe tours. Tours depart from Kewalo Basin Harbor and Waianae Boat Harbor, offering 2-3 tank dives, introductory dives, and gear included.

Island Divers Hawaii offers professional and safe boat scuba diving charters in Honolulu, Oahu, featuring wrecks, turtles, and fish in a fun and relaxing atmosphere. They provide the best selection of dives from Hawaii Kai Marina, with departures at 8:30am for deep and drift dives or 9am for shallow reef dives, returning around noon or 1pm after Waikiki pickup. Services include Waikiki and Honolulu pickups, liability release, diving cards, drinks, light snacks, boat safety briefings, dive site briefings, and divemasters for guidance and safety.

Polynesian Hostel Beach Club is a fun, clean, safe, and affordable hostel located half a block from Waikiki Beach in Honolulu, offering dormitory accommodations for up to 75 guests, beach amenities like towels, snorkel gear, and surfboard rentals, weekly guided hikes, social events, and paid tours including Circle Island Tour, North Shore Tour, and Catamaran Snorkel and Sailing Tours.

Reef Pirates Diving is a small Oahu-based scuba diving company focused on quality over quantity, operating its own 28-foot dive boat limited to six or fewer divers plus crew for personalized experiences. They offer daily scuba diving trips, PADI certification courses, private charters, first-time diver experiences, wreck, drift, wall, night, and reef dives, sport fishing, whale watching (Dec-May), Molokai escorts, ash scatterings, and more, with an excellent safety record and U.S. Coast Guard licensed captains.

Aloha Scuba Diving Company is a Veteran & family-owned PADI 5 Star Instructor Development Center (IDC) scuba dive shop in Honolulu, Oahu, Hawaii, with locations inside the Ala Moana Hotel in Waikiki and at Ala Wai Harbor slip #68. They offer scuba diving charters, training, Discover Scuba Diving, snorkeling, equipment rentals, and dive trips for all levels from beginners to certified divers, emphasizing safety, hospitality, and conservation as a 100% PADI Aware Dive Shop.

Banzai Divers Hawaii is a small diving company specializing in scuba diving on Oahu’s North Shore and Waikiki. They focus on personalized small group tours and courses, emphasizing safety, experienced staff, and unique Hawaiian marine experiences including wreck dives and endemic species.

Aloha Scuba Diving Company is a Veteran & family-owned PADI 5 Star Instructor Development Center (IDC) scuba dive shop in Honolulu, Oahu, Hawaii, with locations at Ala Moana Hotel in Waikiki and Ala Wai Harbor. They offer certified dive charters, dive training, discover scuba diving, snorkeling trips, rental gear, and emphasize safety, hospitality, and conservation as a 100% PADI AWARE dive shop.

Dive Oahu is Honolulu's premier safe dive shop and one of the biggest dive centers on Oahu, serving the dive community for over 25 years with a reputation for excellence and PADI awards. They offer expert-led scuba diving tours and charters including wreck and reef dives (e.g., YO-257, San Pedro, Sea Tiger), introductory scuba, private scuba and snorkel charters, and west Oahu Wai'anae reef and wreck charters from Kewalo Basin Harbor, featuring PADI-certified guides, gear, snacks, and refreshments.