Treat yourself and your loved ones to the most ambitious and rewarding Niihau Tour boat tour offered on Kauai—the Niihau & Napali Coast Super Tour. First, explore the extraordinary Niihau Island Napali Coast, and then cross the 17-mile Kaulakahi Channel to tour Lehua Crater and the “Forbidden Island” of Niihau Snorkeling Niihau. See and snorkel Niihau snorkeling tours with ocean wildlife that’s only observed in these deep, remote waters.