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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 designed fish food torpedo buttons. Designed after America's first nuclear powered submarine, the USS Nautilus, the 45-minute journey is the destination itself as our captain and his crew ventures out on an exploratory mission to the undersea gardens of Avalon Bay.
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
We are located on Catalina Island, You must secure transportation to the island to take the tour. There are no refunds if you miss the tour
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.
For a full refund, cancel at least 24 hours before the scheduled departure time.
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 sanctuary known as the Lovers' Cove. Equipped with torpedo buttons, adventurers can create a feeding frenzy right from their viewing porthole for an additional charge. On the way back to the marina, enjoy breathtaking harbor views on the top deck of the submarine. Weather permitting, undersea garden tours depart hourly year round from mid-morning until an hour before sunset. **we highly suggest you secure transportation to Catalina island prior to booking tour to confirm you can get to the tour as the boat to the island sells out quickly. Catalina Express or Newport Flyer for your transportation needs.
English guide
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.
537 đánh giá
Tổng số đánh giá và xếp hạng từ Viator & TripAdvisor
Z7610ORjosepha,,19 thg 2, 2026
- Đánh giá từ Tripadvisor
Cute little excursion if you are visiting Catalina , where you view 3 areas where local fish school. 5 minute easy walk from the tender port. Found the vendor via Viator 12:45pm departure , be there by 12:30 , was a relaxed, comfortable 45 minutes cruise with a view below water level. Bought 3 fish food shots for $5. Weather in the 80’s it was a cool experience checking out the fish. Easy walk from the tender port, with the vendor both located at mid pier where you can obtain your admittance ticket, and mooring location at the end of pier where there are some comfortable benches. Submarine was cool and comfortable, and this all adult sailing had many of us reveling in our inner kiddo.






Joseph A,,19 thg 2, 2026
- Đánh giá từ Viator
Customer service booth, and sailing pier was just a short walk from the tender port, but still give yourself some time to walk over to the neighboring pier. Customer service / vendor booth is about 1/2 way up the pier and displays their iconic yellow submarine. Staff were great to interact with and produced a ticket for my admission. Vessels are entered at the end of the pier where there are some benches. The excursion was maybe 1/2 full and all adults, but we embraced our inner kiddos allowing ourselves to openly get excited as we encountered the schools of fish spread out across 3 locations. Catalina was in the high 80’s but our viewing area below the water level was cool and comfortable. Though not probably needed many of us purchased feed torpedos, I bought 3 for $5, a nominal sum in my opinion. Upon firing food would be projected out above my window resulting in a frenzy of feeding. I wanted a low activity excursion, and for me it was a nice way to explore the bay for an hour. I mentioned the excursion the evening before at my shared MDR table, and a couple I dinned with took an earlier slot and also enjoyed it. It’s easy to recommend.





hanser2020,,8 thg 2, 2026
- Đánh giá từ Tripadvisor
Called me 20 days before the tour. They said the sub is not available you can have the glass bottom boat. No notice through TripAdvisor. Just a phone call. All the other tours in the area are now booked. Disgusted.
Nancy C,,22 thg 1, 2026
- Đánh giá từ Viator
I was sooo amazing and our host Marcus was great! The views were amazing and so relaxing to see all the natural sea life
NATALIE M,,17 thg 1, 2026
- Đánh giá từ Viator
I love sealife, so this was right up my alley! It was awesome blasting food out for the fish and watching them go on a feeding frenzy. That totally tickled me.
Viki Y,,14 thg 1, 2026
- Đánh giá từ Viator
It was fun but the fish food is over priced. If you think you’ll miss out if you don’t purchase it the fish swarm the entire “sub” when others are feeding them. Save your cash.
Madelin G,,13 thg 1, 2026
- Đánh giá từ Viator
Overall a good experience. Marcus was really friendly and good to check on everyone. My kids loved it. I do wish it was a little longer to see a wider variety of fish, but with people getting sea sick I can see why not. Overall we enjoyed it
Amy G,,10 thg 1, 2026
- Đánh giá từ Viator
What a great way to see wildlife! Our guide was knowledgeable and passionate about the sea. It was the perfect amount of time and I enjoyed going to the top of the sub for the ride back to port. My 9 year old enjoyed this adventure. Everyone on the sub seemed to be enjoying themselves. Feeding the fish was super fun!
Jeanne B,,30 thg 12, 2025
- Đánh giá từ Viator
Marcus and Dave were great! I highly recommend buying the 8-pack of fish food - the fish KNOW it's there and you'll see SO MANY more fish if you participate! Marcus gave us a lot of interesting information about the local sea life and was very friendly - he offered to take photos of us in the sub, which was really nice, and we now have pics of us with a window full of fish behind us - so cool! This is a must-do when visiting Catalina, whether you're on a date, with kids, or with a group of friends/coworkers.

debrabD7500UD,,30 thg 12, 2025
- Đánh giá từ Tripadvisor
We all had a wonderful time learning about the submarine, the kelp, the types of fish, and their environment. The yellow submarine team is terrific. We recommend it highly!
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