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Cuatro Hermanos & Tortuga Island

Far from the crowds, deep into the wild — Isabela’s ultimate multi-site snorkeling experience

Premium Boat - $180
  • Hammerhead Sharks
  • Manta Rays
  • Hidden Cave

Cuatro Hermanos & Tortuga Island Snorkeling Tour

The journey circles the remote waters of Tortuga Island, where hammerhead sharks, oceanic manta rays, and colourful fish make every immersion an encounter with the open ocean.

But instead of stopping at one remarkable site, the journey continues to Cuatro Hermanos where you explore a hidden cave and discover a completely different side of Isabela’s marine world by adding new landscapes, habitats, and possibilities for wildlife encounters along the way.

  • Multiple snorkeling immersions across two extraordinary marine sites.
  • A diverse underwater experience with both reef and pelagic wildlife.
  • Explore the remote waters beyond Isabela’s sheltered coastline.
  • Small group experience guided by local experts.
Check availability

Best time to Go:

December to June

Focus:

Pelagic Marine Life & Birds

Availability:

Saturdays from 8:00 to 16:00

Duration:

8 Hours

Small Groups

Only 6 to 12 guests

Experience Level:

Confident swimmer/advanced snorkler

What is included:

See here

Cuatro Hermanos & Tortuga Island Snorkeling Tour Itinerary: What to Expect

Explore the Four Brothers: Departure from Puerto Villamil to Cuatro Hermanos

Embark on an unforgettable journey as we depart from Puerto Villamil to Cuatro Hermanos, also known as the Four Brothers. As we set sail, prepare to be mesmerized by the scenic ride with opportunities to spot majestic pilot whales and graceful manta rays gliding through the clear waters.

The Cuatro Hermanos Islets viewed from the tip of the Golden Ray. Tour Cuatro Hermanos & tortuga Island - Isabela Island - Galapagos

Discover Hidden Wonders: Round Trip Around the Four Islets

Our adventure continues as we navigate around the four picturesque islets of Cuatro Hermanos. Delve into the hidden wonders of the area with a stop at a secret cave, where you’ll have the chance to explore the intriguing surroundings.

The Golden Ray in front of the biggest islet of Cuatro Hermanos. Tour Cuatro Hermanos & Tortuga Island - Isabela island - Galapagos

Dive into Underwater Paradise: Snorkeling and Marine Encounters

Jump into the azure waters and snorkel amidst a vibrant underwater paradise. Encounter a kaleidoscope of colorful reef fish, mesmerizing barnacles, starfish, and anemones. Keep your eyes peeled for white and black-tip reef sharks, eagle rays, and magnificent manta rays gliding gracefully beneath the surface. Depending on visibility and time, immerse yourself in up to four exhilarating snorkeling sessions in this captivating area.

Hammerhead shark

Delightful Exploration: Lunch and Loberia Grande

After indulging in a delicious lunch, satisfy your adventurous spirit with an explorative walk or snorkelling in Loberia Grande. Explore the unique landscape and observe the fascinating flora and fauna that call this area home or dive back into the crystal-clear waters for another short immersion in the shallow snorkeling area, immersing yourself in the vibrant underwater world.

Delight in Tortuga Island: Marine Bird Watching and Immersive Experiences

Our journey then takes us to Tortuga Island, where you’ll be captivated by the diverse marine bird population. Marvel at the majestic frigatebirds, graceful swallow-tail gulls, and iconic blue-footed and Nazca boobies, alongside red-billed tropicbirds soaring overhead.

Immerse yourself in the underwater wonders of Tortuga Island with one or two thrilling diving sessions. Encounter massive fish schools, graceful sea turtles, and the ultimate highlight – chances to encounter Hammerhead and Galapagos sharks, as well as giant manta rays, in their natural habitat.

For those seeking a different thrill, try your hand at fishing for yellow-fin tunas, groupers, Wahoos, mullets, snappers, and more, or simply unwind on our sun deck and soak in the breathtaking surroundings.

We head back around 16:00 to Puerto Villamil, concluding our exhilarating adventure. Don’t miss out on this once-in-a-lifetime experience! Book your tour now and embark on an unforgettable journey to the Four Brothers & Tortuga Island.

Evelyn H.
lovely experience that I'd highly recommend to anyone!!
This tour was fantastic, I can't recommend it enough!! The guides were very nice and extremely knowledgeable. We got to snorkel 5 times and saw so many animals including sea birds, giant manta rays, and hammer head sharks! The lunch was prepared fresh on the boat, and was very good.
Elisa S.
Our family of 5 loved this tour!
Our kids are 17, 16, and 12 and it was the perfect snorkeling experience for them. Carlos and Roberto were amazing guides. They were both friendly and knowledgeable and the boat was great. We had a delicious meal on board and also enjoyed connecting with the other passengers. We highly recommend Agora!
Julia K.
My favourite tour was our visit to Cuatro Hermanos and Isla Tortuga
It was a full day boat excursion where we had the opportunity to snorkel with hammerhead sharks, manta rays, and so many other beautiful creatures the Galápagos has to offer! Carlos was our guide for this trip and taught us so much about the area and its wildlife. The lunch was also incredible, with fresh fish caught by the boat crew only a few hours prior.
Rich
The snorkeling was hands-down some of the best we’ve experienced
Carlos and Roberto were amazing guides—they knew exactly where to look for marine life. We saw everything from frigates and blue-footed boobies to marine iguanas along the rocks. But the real "pinch-me" moment was seeing both reef sharks and hammerheads in the water!

Why go beyond Tortuga?

Tortuga is already an exceptional snorkeling experience. So what does Cuatro Hermanos add?

Not just more time in the water — a completely different underwater experience.

Cuatro Hermanos & Tortuga Island Tour

The Experience

Snorkeling in different marine environments, birdwatching & fishing (optional)

The Immersions

Between 3 and 5 Immersions

Snorkeling Environments

Deep Water (5-12 meters), hidden Cave, shallow water snorkeling (2-5 meters)

Possible Marine Ecounters

Hammerheads, Galapagos Sharks, Black-tip reef Sharks, Manta Rays, Turtles, Sea Lions, Invertebrates and Tropical Fish

Marine Birds

Blue-footed Boobies, Nazcas, Swallow-tail Gull, Lava Gull, red-billed Tropicbird etc.

Best for you if...

you want to experience pelagic species, birds and the full diversity of Isabela’s underwater world — with multiple snorkeling immersions across two very different marine environments.

Tortuga Island Tour

The Experience

Deep-water snorkeling experience, birdwatching & fishing (optional)

The Immersions

Two Snorkeling Experiences

Snorkeling Environments

Deep Water (5 to 12 meters)

Possible Marine Ecounters

Hammerheads, Galapagos Sharks, Manta Rays, Turtles and schooling fish

Marine Birds

Blue-footed Boobies, Nazcas, Swallow-tail Gull, Lava Gull, red-billed Tropicbird etc.

Best for you if...

your main focus lies on encountering pelagic species & marine birds.

Interested in experiencing the most diverse snorkeling on Isabela Island?

We’re happy to guide you to the next available dates.

Expess Interest
Not sure yet?

Inclusiones

  • Experienced Naturalist Guide
  • Land- & Maritime Transportation
  • Delicious Lunch (vegetarian & vegan Options available)
  • Snacks & Drinks
  • Snorkeling Equipment
  • Fishing Equipment
  • Towels
  • Wetsuit (long or short)
  • Unique Pictures & Memories to take home
  • Tip for Guide & Crew
  • Additional Services

What can I discover?

Packing List

Sun Protection & Glasses

Bring a wide-brimmed hat (recommendable with a string), sunglasses and reef-safe sun screen.

Swim Wear/Rashguard

We highly recommend a Rashguard against the high radiation.

Camera/Go Pro

Capture your adventures and take home the best souvenir possible.

Rain Jacket (Optional)

A rain jacket during the rainy season and for early morning Garúa is recommended.

Motion Sickness Medicine

If you know that you struggle with choppy seas, we recommend taking some non-drowsy motion sickness medicin about 30 minutes before the trip. Just in case.

Refillable Water Bottle

We Provide Water to Refill. Staying hydrated under the Galápagos sun is essential.

Reservation​

Cuatro Hermanos & Tortuga Island is a more specialized experience and is operated with small groups (minimum 6 guests). Instead of fixed daily departures, we organize each trip individually to ensure the right group and conditions.

By signing up for this experience, you secure priority for upcoming departures on your preferred dates. Our team coordinates the planning and confirms the trip as soon as the group is formed. 

Availability is sparse, we recommend securing your spots in advance.

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