Undersea Expedition: Catalina Island Tour

Name: Undersea Expedition: Catalina Island Tour
Price: 53.45 USD
Availability: InStock
Rating: 4.42 (104 reviews)

Overview

Available languages

English

45 minutes

Mobile ticket

Come face-to-face with Catalina's abundant marine life on this 45-minute underwater excursion. Cruise five feet below the surface in a spacious, climate-controlled cabin with a live guide suggesting salient points of interest. Every passenger has their own seat and port hole but you are also free to roam around the cabin for other viewpoints.

Additional Info

Public transportation options are available nearby

Infants are required to sit on an adult’s lap

Suitable for all physical fitness levels

Restrooms are not available while on tour, but are available at the base of the Green Pleasure Pier, so please use before check-in

Please check your email through Viator for your confirmation number and tour information

Cancellation Policy

All sales are final. No refund is available for cancellations.

What To Expect

Catalina Expeditions Tours

Boat By

Admission Not Applicable

Green Pleasure Pier

Tour starting location Gate C

Admission Not Applicable

What‘s Included

Live commentary on board

Gratuities

Options

Undersea Expedition: Catalina Island Tour

Reviews

4.42

104 reviews

Total reviews and rating from Viator & Tripadvisor

Ho-hum tour
Robert W,,Feb 8, 2026
- Review from Tripadvisor
3.00
Saw many of the same 2 kinds of fish. Nothing special. Maybe if you have never been to the ocean before it would be of interest.
Amazing Excursion
Donya H,,Feb 7, 2026
- Review from Viator
5.00
This was an amazing experience for all age groups. The captain and Jaxon was very friendly, kind, professional and knowledgeable of the species of fish. My family truly enjoyed the excursion and highly recommend it.
Unique Underwater Adventure
Ionela B,,Feb 7, 2026
- Review from Viator
5.00
Great submarine tour! It was a unique and exciting way to see marine life underwater. The crew was friendly and explained everything clearly. Highly recommend this experience!
Amazing Experience
Autumn S,,Jan 6, 2026
- Review from Viator
5.00
Wonderful view and very polite and informative operators. They told us about the history of glass bottom boats and of the preservation efforts. A wonderful experience all around!
Thankful and as expected.
Paul S,,Oct 23, 2025
- Review from Viator
5.00
This tour was exactly as expected. Originally missing our timed tour but the ticket office showed me courtesy and allowed us on the next one. Thanks.
Great Experience
Bryan B,,Jun 24, 2025
- Review from Viator
5.00
The crew were amazing. The captain and mate were very knowledgeable and answered every question. The fish were beautiful in the preserves
Wow! Wonderful trip!
Sharon J,,Apr 13, 2025
- Review from Tripadvisor
5.00
We saw tons of fish throughout the excursion, and staff told us the names of the different ones we saw. This is the one to go on!
Family adventure
Pioneer31360,,Apr 11, 2025
- Review from Tripadvisor
5.00
Friendly, helpful, nice experience. Both at the "booth" and on the boat. I have Nothing more to add definitely no complaint.
Spring time trip-Semi Sub
Mariam A,,Mar 31, 2025
- Review from Tripadvisor
3.00
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.
Fun Fish Sightings!
Joni D,,Mar 31, 2025
- Review from Viator
5.00
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!