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Avalon Semi-Submarine Tour of Catalina Island

Experience Catalina Island's underwater wonders on a 45-minute semi-submarine tour in Avalon. Enjoy marine life views without getting wet.

Catalina Island
45 min
3.12Rating:
1 provider liveLast updated: May 17, 2026

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4.39
571 reviews

Important Information

  • Service animals allowed
  • Public transportation options are available nearby
  • Infants are required to sit on an adult’s lap
  • Suitable for all physical fitness levels
  • Not wheelchair accessible. Due to uneven surfaces, this tour is not recommended for those with walking disabilities or using a wheelchair
  • Your tickets will be held at the will-call window for collection on the day of the tour.
  • Children must be accompanied by an adult
  • Infants (2 years old and under) must be ticketed on a USCG vessel; fare is free-of-charge but fees apply
  • You MUST arrive 15 minutes prior to boarding to check in. We leave promptly at the scheduled time and cannot wait. When booking travel to the island please make sure to give enough time from arrival to island to get to tour departure location.
  • Late Policy: The Nautilus expedition departs from only one location. If you arrive late, we are not able to provide you with a refund. Our tours are scheduled to provide you with the best experience possible, and we are not able to make any exceptions if you are late.

Embark on a unique adventure with the Avalon Semi-Submarine Tour of Catalina Island. Step aboard the SS Nautilus, a vessel inspired by America's first nuclear-powered submarine, and dive into an unforgettable 45-minute journey beneath the waves of Avalon Bay. Without getting wet, you'll enjoy panoramic underwater views and encounter vibrant marine life through the semi-submarine's windows. The tour offers a family-friendly experience where you can marvel at schools of fish and the stunning undersea gardens. Don't miss the chance to explore Catalina Island's aquatic wonders. Book your spot today for an adventure that promises both excitement and relaxation.

Pros

  • Explore underwater views without getting wet
  • Experience the thrill of a semi-submarine ride
  • Witness vibrant marine life in Avalon Bay
  • Enjoy a family-friendly adventure
  • Discover the unique design of the SS Nautilus

Includes

  • English guide

Excludes

  • Fish food offered at additional charge during tour. Cash only.
  • Travel to Catalina Island is not included in ticket price. Tour is located on Catalina Island.
  • Transportation needed by ferry to island - Catalina Express or Newport Flyer to get to island.
$56.5
3.12Rating:

Tour Highlights

  • Explore underwater views without getting wet
  • Experience the thrill of a semi-submarine ride
  • Witness vibrant marine life in Avalon Bay
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