• Location: Avalon, California
  • Duration: 45 minutes (approx.)
From USD $ 37.00 View price calendar

Low Price Guarantee

See what lives in the Pacific waters surrounding Catalina Island on a 45-minute underwater cruise. As you sit comfortably in a climate-controlled cabin on board a large boat, you'll glide five feet (1.5 meters) below the surface to look for marine life in their natural habitat out of your own porthole. Along the way, listen to live commentary from a guide.


  • 45-minute undersea tour from Avalon
  • See the underwater world of Catalina Island without getting wet
  • Learn about the Pacific Ocean marine life from a guide on board
  • Choice of departure times available throughout the day

What You Can Expect

Catalina Island Undersea Expedition

View from the cabin, below the waterline

Your undersea expedition starts at Green Pleasure Pier in Avalon, where you'll hop aboard the semi-submersible vessel and journey below the waterline for a look at the underwater world of Catalina Island.

Every passenger has his or her own seat and porthole, but you are also free to walk around the cabin for other viewpoints. Look for fish and other Pacific marine life as your deckhand-guide provides narration about the environment and points of interest. On the way back to the harbor, you may go up on deck to admire views of Avalon before docking.

Customer Reviews

Rhia H

5 star rating: Highly Recommended July 2017

Great activity for the whole family. Crew were competent and friendly. Being able to see the fish feed through the big glass windows was enjoyable for all ages. Being a nature adventure, what you will see is whatever is out there --- no guarantees. However, if you keep your eyes open and stay alert, you will see and observe a lot.

anna r

5 star rating: Highly Recommended September 2016

Had the time of my life there, the people are friendly and there is a lot to do there.


5 star rating: Highly Recommended May 2016

Great mini-excursion, especially with small children.

Ann A

4 star rating: Recommended April 2018

This was fun for our whole family. We had 3 generations and each person said how much fun it was. There were many fish to see and the staff were very helpful. We recommend this to any other family.

Katherine R

4 star rating: Recommended March 2018

The tour itself was exactly as expected. They even refunded the tickets for two in our party when they got sick right before boarding. The tour operator needs a better sign to identify which tour booth belongs to them. We finally just has to stop and ask at one of the tour booths to be directed to the correct one.


4 star rating: Recommended October 2016


Noel C

3 star rating: Worth doing April 2016

The phone number that iator has posted on their reservatio ninstructiosn to call and reserve your seats is incorrect and disconnected. Started out bumpy but I was able to go online and find another number to reserve seats, but this should be updated! :

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