Waianae Harbor is a small boat harbor on the west coast of Oahu, Hawaii, offering sportfishing charters, sailing cruises, dolphin excursions, whale watching, and snorkeling tours. It features facilities including 109 berths, 7 ramps, vessel washdown, fish hoist, marine sanitation pump out, harbor office, restrooms, ice house, and convenience store. Various operators like Hawaii Nautical (family-owned ocean activities), Dolphin Excursions (dolphin and whale watching on 34-foot RIB for small groups), and others provide services such as swim with wild dolphins, snorkeling with turtles and reef fish, sunset cruises, and private charters with limited capacity for intimate experiences.

Hawaii Sail Charters is Kona's Premier Sailing Tours on the Big Island, offering private sailing charters including snorkeling adventures, wild dolphin swims, snorkel tours to Captain Cook and Kealakekua Bay, sport fishing, whale watching, and sunset sails.

Dolphin Excursions Hawaii, Inc. offers charter boat excursions on Oahu's Waianae Coast, specializing in viewing wild spinner dolphins year-round, humpback whales in winter, and snorkeling with sea turtles and tropical fish. Tours are limited to a maximum of 15-16 guests for personalized service, led by experienced marine biologists and naturalists using fast RIB boats from Waianae Boat Harbor.

Hawaii Nautical is one of Hawaii’s largest ocean-activity providers, operating for over 25 years with the state’s largest inter-island fleet of vessels serving harbors across Oahu, Maui, and the Big Island. They offer luxury private charters, snorkel cruises, sunset sails, day sails, whale watching, and scenic tours, emphasizing safety, genuine aloha, respect for marine life and ecosystems, Dolphin SMART recognition, reef conservation, and support for local communities.