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Experience Catalina Island’s marine life in just 45 minutes aboard the semi-submarine SS Nautilus, with clear windows, fish feeding, and top island views from Avalon.

The Yellow Semi-Submarine Tour of Catalina Island from Avalon offers a quick yet captivating glimpse into the island’s vibrant marine ecosystem. Priced at $53 per person and lasting about 45 minutes, this tour provides a dry, accessible way to explore Lovers’ Cove’s underwater gardens without getting wet. Departing from Green Pleasure Pier in Avalon, the tour is highly booked, with over 534 reviews and a solid 4.5-star rating.
This experience is especially appealing for families and those seeking a relaxed, scenic activity. It’s a reliable choice for a short, engaging adventure that combines underwater views with spectacular island scenery. Keep in mind, the tour is suitable for most travelers but requires arriving 15 minutes early and securing transportation to Catalina Island in advance.

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The semi-submarine SS Nautilus is inspired by America’s first nuclear-powered submarine, bringing a touch of maritime history to your adventure. This vessel remains six feet below the surface, allowing passengers to observe the underwater environment through expansive portholes. The design ensures you stay completely dry while getting close-up views of the marine ecosystems of Lovers’ Cove.
Departing from Green Pier, this tour runs hourly from mid-morning until an hour before sunset, making it easy to find a departure time that fits your schedule. The vessel features torpedo buttons that, for an additional fee, enable you to trigger feeding frenzies, drawing the attention of schools of fish directly to your window.

The tour’s main highlight is the journey to Lovers’ Cove, one of Catalina Island’s most protected and scenic marine areas. As the semi-submarine cruises through the cove, passengers can observe diverse fish populations and kelp forests thriving beneath the surface.
The undersea gardens are carefully preserved, offering a glimpse into Catalina’s underwater biodiversity. Captains and guides, who are praised for their knowledgeable and friendly demeanor, often highlight specific fish species and explain the ecosystem’s delicate balance, adding educational value to the fun.

One of the tour’s most popular features is the opportunity to feed the fish using specially provided food torpedoes—though these are sold separately for cash at the start of the trip. When the food is released, a feeding frenzy often ensues, with numerous fish swimming right up to the windows, creating a lively and entertaining spectacle.
Several reviews emphasize how feeding the fish is a highlight, especially for children, who love seeing the schools of fish respond instantly. Some note that buying the fish food is well worth it, as it significantly increases the number of fish attracted and the overall experience.

After the underwater exploration, the tour continues with a return to Avalon, where passengers can enjoy breathtaking views of Catalina Island from the vessel’s top deck. From this vantage point, travelers can see the rugged coastline, the town, and the surrounding harbor, adding a scenic end to the journey.
The top deck experience is appreciated for providing a panoramic view away from the underwater windows, ideal for photos and appreciating the island’s natural beauty. Weather permitting, this part of the tour is a peaceful way to conclude the 45-minute adventure, with many reviews mentioning how relaxing and picturesque the ride is.

The meeting point for the tour is at Green Pleasure Pier in Avalon, where tickets are held at the will-call window. It’s important to arrive 15 minutes early for check-in, as the tour departs promptly. The tour is suitable for most travelers and is accessible for service animals; children must be accompanied by an adult.
Transportation to Catalina Island is not included in the ticket price, which covers the tour itself. Visitors need to book a ferry—via Catalina Express or Newport Flyer—to reach Avalon. The tour is limited to 48 participants, ensuring a comfortable and engaging experience for everyone.

The tour requires good weather to operate smoothly; if canceled due to poor conditions, a full refund or rescheduling is offered. Because the tour relies on clear visibility and calm waters, travelers are advised to check weather forecasts before booking. No refunds are provided if guests miss the scheduled departure, so punctuality is essential.

The Yellow Semi-Submarine Tour is praised for its family-friendly nature, with many reviews highlighting its appeal to kids. It’s an excellent choice for those who prefer a dry activity with minimal physical effort but want to enjoy marine wildlife and scenic island views.
The tour’s educational commentary and fish feeding options add an interactive element, making it a fun, relaxed, and accessible way to learn about Catalina’s marine environment. It’s also appreciated by visitors seeking a short, scenic activity that offers plenty of visual interest without requiring a long time commitment.
The semi-submarine experience offers a unique perspective on Catalina Island’s underwater life with large, clear windows and an easy, dry viewing experience. It’s especially suitable for families, seniors, or those who prefer not to get wet but still want an engaging marine encounter.
While the tour provides spectacular views and friendly guides, it’s worth noting that fish food is sold separately, and timing is strict—arrive early, or risk missing the departure. The short duration means it’s ideal as a quick highlight, not a comprehensive dive into the marine environment, but many reviewers consider it the best way to see Catalina’s fish without snorkel gear.
“Jo and her crew were GREAT! We had the best time and this is a must if youre visiting Catalina island. They took us to the best spots and we saw so…”
How long is the semi-submarine tour?
The tour lasts approximately 45 minutes.
Where does the tour depart from?
It departs from Green Pleasure Pier in Avalon.
Is the tour suitable for children?
Yes, the tour is great for families, and children must be accompanied by an adult.
Do I need to buy fish food?
Fish food is sold separately for cash and is highly recommended to enhance the experience.
Can I stay dry during the tour?
Absolutely, the semi-submarine’s large windows allow for dry, comfortable viewing.
What time does the tour run?
Tours depart hourly from mid-morning until an hour before sunset.
What should I bring?
Bring cash for fish food, dress for the weather, and arrive early for check-in.
Is transportation included?
No, transportation to Catalina Island must be arranged separately via ferry.
What if the weather is bad?
Tours require good weather; if canceled, a full refund or reschedule is offered.
How many people can join the tour?
The maximum group size is 48 travelers.
This Yellow Semi-Submarine Tour of Catalina Island offers a memorable, accessible, and scenic way to see the island’s marine life, with excellent reviews reflecting its engaging guides, clear windows, and fun fish-feeding moments. It’s a practical, family-friendly adventure that highlights Catalina’s underwater beauty without requiring wetsuits or diving experience.