easy
45 minutes
Suitable for all fitness levels including children and seniors
Discover Catalina Island’s underwater world effortlessly aboard The Nautilus semi-submarine. This 45-minute guided tour from Avalon gives you a front-row seat to vibrant marine life and kelp forests without getting wet.
Starting at $50 | 45 Minutes | Most Popular!
45 Minutes
Amazing undersea garden sights await adventurers aboard the semi-submersible Nautilus, designed after America's first nuclear powered submarine, the USS Nautilus. Join our captain and his crew on an exploratory mission that is both educational and entertaining. This vessel features a fish food feeding system launched by torpedo buttons so you can feed the fish from your seat (for an additional charge).
Fire One! Fire Two! You have not entered enemy waters; you are now in a marine preserved sanctuary where a feeding frenzy delight seafarers. Seasonal evening missions may also be offered for viewing nocturnal sea creatures active only after dark!
Tours are approximately 45 minutes and leave from the green Pleasure Pier. Seasonal evening missions may also be offered where explorers can view nocturnal sea creatures active only after dark.
Ambulatory Requirements: Participants must be able to transfer to vessel (walk 12 steep steps down to and up from the seating area).
Advisories: For safety, you should be in good health and free from claustrophobia or anxiety symptoms, high blood pressure, motion sickness, or other conditions that could be aggravated by this adventure.
Board early to secure a window seat for optimal underwater views during the excursion.
Even on warm days, the vessel's interior can feel cool due to ocean breezes and air conditioning.
Keep your eyes peeled near kelp beds where marine life is most active; guides will point out key spots.
If prone to seasickness, consider taking motion sickness medication before boarding as the vessel gently moves.
Catalina Island was designated as a game preserve in 1927, helping to protect its unique marine and island ecosystems.
The tour operates with eco-friendly practices to minimize impact on Catalina’s delicate marine habitats, supporting ongoing conservation efforts.
Capture vivid underwater scenes through the vessel’s large viewing windows.
Protect your eyes from strong sunlight when on deck before or after the tour.
summer specific
Stay comfortable in cool ocean breezes during the boat ride.
spring specific
Stay hydrated before or after your excursion.