On Island THE FORBIDDEN ISLAND - site by the residents and owners of the island. From here you can learn about their safaris, shell leis, and more. Treasures of Ni'ihau - leis and more made by a Ni'ihau ohana. Relevant Off Island Businesses Bubbles Below Scuba Hawaii - Scuba Dive Kauai & Niihau - info on their dives. Niihau Kauai forbidden Island - Blue Dolphin Charters - they have several pictures of the charter tour they offer to the waters off the island. Scuba Dive Niihau - another group that offers a diving trip.