The sixth-largest island in the Hawaiian Islands' chain, Lanai, is known for its natural beauty and serenity. Once home to a plantation that produced 75% of the world's pineapples, Lanai is today more tourist oriented but that doesn't take any of its charm, this little paradise still presents a laid-back and intimate atmosphere. What is more, the Lanai's coastline is famous for its superb diving full of swim-throughs, archways, and lava structures. But that's not the main lure yet. Lanai is home to an underwater spiritual experience like no other: The Cathedrals, the ultimate in Hawaiian diving.