Undersea Expedition: Catalina Island Marine Life Tour

Embark on a thrilling undersea expedition to Catalina Island and discover the diverse marine life that calls these waters home. Explore the depths in a climate-controlled cabin with a live guide, offering fascinating insights along the way.

Duration: 45 minutes
Cancellation: 24 hours
Highlights
  • Catalina Expeditions Tours - Boat By
  • Catalina Island Company - Boat By
What's Included
  • Live on-board commentary
What's Not Included
  • Gratuities
Additional Information

Experience the richness of Catalina’s underwater world on this 45-minute subaqueous voyage. Enjoy a comfortable journey five feet beneath the waves, inside a roomy, temperature-regulated cabin with a guide pointing out key sights. Every traveller has their personal seating and viewing portal, yet, exploration within the cabin for alternate perspectives…

Location
1 Green Pleasure Pier
Green Pleasure Pier
Undersea Life
Cancellation Policy

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

Customer Ratings
4.4
(96 Ratings)
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Joni_d
Mar 31, 2025
Fun Fish Sightings! - It was fun to see the bottom of the Avalon harbors and then see all the fish swarm around the boat. My kids really enjoyed seeing all of the fish, kelp and ocean. We would do it again!
Review provided by Viator
Bevb316
Mar 14, 2025
Spectacular - Back again to enjoy under the sea adventures. I love how the operators chum the fish & HUNDREDS of unique fish come out from the kelp… SPECTACULAR !
Review provided by Tripadvisor
Eyeoncomputers
Jan 31, 2025
Informative and fun - It was easy to find the office on the pier and was directed to the location of the submarine. The guides were very personable and knowledgeable. Made the trip through the waters very enjoyable. Seeing the forest of kelp and thousands of fish swimming around the sub's windows was a great experience, especially when there was context coming from the guides. Definitely would recommend to check out if you are interested in wanting to check out the ocean around Catalina Island (such as seeing bottom glass boat ride or submarine tour).
Review provided by Tripadvisor
Tour20756833992
Oct 11, 2024
Undersea adventure - Great experience. Saw lots of fish and kelp beds. Very informative and interesting Ian and Allan were great. The many different kinds of fish were fun to see thanks
Review provided by Tripadvisor
Dennisaupholstery
Sep 8, 2024
WAY BETTER THAN A GLASS BOTTOM BOAT - I booked this tour just to fill up time and have something to do. Wow, did I underestimate how awesome this red Undersea Sub Expedition 😍. The kelp fields, the fish feeding, literally thousands of fish, the tour guide Ian, and comfortable air conditioning. 1000 times better than a glass bottom boat.
Review provided by Tripadvisor
Rick_d
Aug 21, 2024
Great tour she a great price. - Great tour. Great narration by the captain and his #2. I loved the feeding frenzy right in front of our underwater windows.
Review provided by Viator
Tourist565089
Sep 26, 2024
under the Sea - The experience of being underwater without getting wet was great. I enjoyed watching variety of fisf during feeding time. The kelp garden was also beautiful. Our Captain Lorenzo and Raffa was also helpful.
Review provided by Tripadvisor
Mariam
Mar 31, 2025
Spring time trip-Semi Sub - Semi-sub was cool, lots of room even for my 6’4” hubby. We had some murky water, went to 2 coves, they chummed the water and we got to see a variety of fish. The young man spoke to only a few of the fish we saw. I recommend a visuals similar to what you see at an aquarium (picture , name of fish, description etc) to help those that may not speak English or are hearing impaired. At about 15 minutes left of the 45 min tour we were asked up to the surface of the boat as we went to dock. That was cool.
Review provided by Tripadvisor
Anasilvia_c
Jan 22, 2025
They canceled my trip - You guys canceled at last minute the activity. I waited for my refund! So sad not time for program another activity there at Catalina Island.
Review provided by Viator
Kristy_g
Oct 28, 2024
Terrible service - Our scheduled time was reserved for 11am and the boat never showed up. We were told at 1115 it got moved to 12pm, that boat never showed up either. Highly, highly recommend you do not utilize this company.
Review provided by Viator
Select Date and Tickets
up to 15 guests
1 Adult
April 2025
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