Catalina Island Semi-Submarine: Underwater Viewing Adventure

Dive into Catalina’s underwater world on the SS Nautilus semi-submarine. Experience marine life up close without getting wet. Book your adventure now!

Duration: 45 minutes
Cancellation: 24 hours
Highlights
  • Catalina Adventure Tours - Explore the Catalina Island’s amazing undersea gardens by venturing on an exploratory mission aboard the semi-submersible SS Nautilus. Designed after the USS Nautilus, America’s first nuclear powered submarine, this 45-minute 6-feet underwater journey departs from the Green Pier and will cruise to a marine preserved…
What's Included
  • English guide
What's Not Included
  • 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.
Additional Information

Come aboard Catalina Island’s newest semi-submarine, the SS Nautilus, and enjoy a deep sea adventure 1,000 leagues beyond your imagination. The main attraction of this unique vessel allows six feet underwater viewing while staying dry so eager seafarers can get up close and face-to-face with schools of fish anticipating treats fired away from custom…

Location
Green Pleasure Pier
Welcome to Catalina! Find us at the Green Pleasure Pier. Check in at our booth at the end of the pier—our ride boards just behind it! Bring your sense of adventure!
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Customer Ratings
4.3
(412 Ratings)
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Kasandra_n
Mar 2, 2025
Wonderful experience with a 4 year old! - This made our whole trip! You get to see TONS of fish and everyone that works here is so pleasant. Brad in particular made our visit a blast. It was well worth the money (I would choose this over the glass bottom boat anyday!) love the ride up on top back to the pier!
Review provided by Viator
Adrianna_t
Feb 26, 2025
Amazing Submarine Ride - Me and my husband has an amazing time on the submarine. We purchased the 16 shots of food. We were able to get a close look at all the different species. It was so colorful and beautiful. Captain Mike was such a big help with other resources on the island. Definitely will be going out there again and enjoying the scene again.
Review provided by Viator
Renego5100zu
Feb 24, 2025
Great experience - Such a fun experience, well worth it. We saw so many different kinds of fish. Jill and Rich were awesome! Great for family or couples. About a 45 minute trip with 3 different stops
Review provided by Tripadvisor
Philli1299ny
Feb 23, 2025
Under the sea - It was a lot of fun and recommend this tour. The guide was very knowledgeable and we saw so many fish. Buy the fish food it's worth it. They kelp forest where beautiful and saw huge schools of sardines.
Review provided by Tripadvisor
Christopher_s
Feb 18, 2025
Loved the yellow submarine - This is a must do for anyone who hasn’t spent much time under the sea. Don’t be surprised to see swimming sea birds down there as well.
Review provided by Viator
Claudiabelle2710
Feb 17, 2025
Nice experience - This experience was so cool! You are able to feed the fish and see all the fish life in Catalina. Once the tour is coming to a close, you are given the opportunity to go on top of the submarine and take photos. I would say the only con is we couldn’t hear what the gentleman was telling us during the tour when talking about the type of fish we were seeing. But other than that, a great tour!
Review provided by Tripadvisor
Todda_f
Feb 15, 2025
Just Do It! - Me and my beautiful wife enjoyed riding in the yellow submarine. It was an unforgettable experience.
Review provided by Viator
Xiwei_w
Jan 8, 2025
Great experience for a family with kids - We booked 9:45am ride, and we were the only ones on the semi-submarine. The guide was nice and offered discount for the fish food bomb. Lots of fishes at each stop, although all very similar types. Nevertheless, we had a lot of fun, all to ourselves. Well worth it.
Review provided by Viator
X8094lklaurat
Feb 28, 2025
So beyond disappointing!Boring.stayed very close2shore. Same fish come2feed. Look out top window and c surface/top - Nothing spectacular to see at all! You can see the surface of the water from the window. And you can see the floor of the ocean the whole time. Stayed at/very near to shore. So don’t expect much
Review provided by Tripadvisor
Lexi_j
Feb 16, 2025
Not worth it. Barely any... - Not worth it. Barely any fish to see. The only way to basically what looks like trout is to spend an extra $20 on fish food and propel it out the side of the submarine which makes a large cloud it’s hard to see fish through anyways. It’s super loud in the submarine. Our 3 year old was scared and clingy to use the whole time with her head buried in shoulder so wasn’t worth it for her. Another toddler was crying from fear the whole time because of noise. Money is better spent in a golf cart.
Review provided by Viator
From $53
up to 9 guests
1 - Adult
Cancellation: Free cancellation up to 24 hours before the start of your experience (local time).