Nautilus Under Sea is a classic liveaboard expedition known for pioneering shark diving experiences. Compact and efficient, this vessel caters to small groups seeking up-close encounters with some of the ocean's most iconic predators. Divers benefit from personalized service, expert guiding, and a relaxed onboard atmosphere. While accommodations are simple, the focus remains on thrilling dives, safety, and unforgettable marine interactions. Nautilus Under Sea is ideal for adventurous divers prioritizing unique experiences over luxury.