Nui Tours is a Hawaii-based tour operator offering immersive island adventures on Oahu. Based in Hilo, it provides Circle Island and Grand Island tours, with private options for small groups and families. Highlights include the Grand Tour Around Island featuring multiple stops, snorkeling, snacks, and beverages, as well as Circle Island itineraries that showcase iconic beaches and viewpoints. The Grand Pearl Harbor and City Tour and other island experiences are available through major booking platforms such as TripAdvisor, Viator, Experience Gifts, and Yelp. Nui Tours maintains an active social and content presence, including a YouTube channel and frequent online listings.