If you’re looking for dramatic volcanic landscapes, incredible wildlife encounters, and unforgettable snorkeling experiences, Isabela Island should be at the top of your Galapagos itinerary.
As the largest island in the archipelago, Isabela offers a unique combination of adventure, nature, and breathtaking scenery that cannot be found anywhere else in the world.
Why Visit Isabela Island?
Unlike the busier islands of Santa Cruz and San Cristobal, Isabela offers a more relaxed atmosphere while still providing access to some of the most spectacular natural attractions in the Galapagos. The island is home to active volcanoes, marine iguanas, penguins, flamingos, sea turtles, and countless endemic species.
Visitors can choose from a wide range of tours depending on their interests.
Los Túneles: The Best Snorkeling Tour in Isabela
Los Túneles is widely considered one of the top snorkeling destinations in the Galapagos.
Over thousands of years, lava flows created a network of natural arches and tunnels above crystal-clear waters. During the tour, visitors can observe:
- Sea turtles
- Seahorses
- Reef sharks
- Penguins
- Rays
- Blue-footed boobies
The excursion combines boat navigation, multiple snorkeling sessions, and a short walk through stunning volcanic formations.
Sierra Negra Volcano: A Journey Through Volcanic Landscapes
For travelers who enjoy hiking, Sierra Negra Volcano is a must-see destination.
The volcano features one of the world’s largest active volcanic calderas and offers spectacular panoramic views. The excursion includes transportation to the park entrance and a guided hike through lava fields and volcanic landscapes.
The trail provides a completely different perspective of the Galapagos compared to the marine-focused excursions.
Tintoreras Islet: Close Encounters with Wildlife
Located just off the coast of Puerto Villamil, Tintoreras Islet is one of the easiest and most rewarding tours on Isabela Island.
Visitors frequently encounter:
- White-tip reef sharks
- Marine iguanas
- Sea lions
- Penguins
- Sea turtles
The combination of walking trails and snorkeling opportunities makes this tour perfect for families and first-time visitors.
Tortuga Island and Other Hidden Gems
For travelers seeking less crowded experiences, Tortuga Island offers excellent opportunities for birdwatching and snorkeling. Visitors can observe frigatebirds, boobies, and other seabirds while enjoying stunning ocean views.
Additional excursions include kayaking adventures and geological tours to the Sulfur Volcano, where visitors can witness unique volcanic formations and colorful landscapes.
Best Time to Visit Isabela Island
Isabela can be visited year-round, but conditions vary depending on the season.
- December to May generally offers warmer waters and calmer seas.
- June to November brings cooler waters and increased marine activity.
Regardless of the season, wildlife sightings remain exceptional throughout the year.
Experience the Best of Isabela Island
From snorkeling in Los Túneles to hiking Sierra Negra Volcano and exploring Tintoreras, Isabela Island offers some of the most diverse adventures in the Galapagos Islands.
Whether you’re a wildlife enthusiast, photographer, diver, or nature lover, Isabela promises unforgettable experiences that will stay with you long after your journey ends.
Ready to explore Isabela Island? Let Go-GalapagosTours create the perfect adventure for your Galapagos vacation.



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