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Discover the beauty of Puerto Vallarta’s Marietas Islands with snorkeling and a chance to visit the Hidden Beach, led by expert guides in small groups.
If you’re planning a trip to Puerto Vallarta and are eager to see some of Mexico’s most breathtaking marine scenery, a snorkel trip to the Marietas Islands might be just what you need. Though I haven’t personally taken this exact tour, I’ve gathered plenty of details from travelers who have, and I can tell you that this excursion offers a memorable mix of wildlife, stunning vistas, and a touch of adventure.
One thing we love about this tour is its focus on small groups and expert guidance—that means more personal attention and less crowded chaos. Plus, the inclusion of biologist-led insights enriches the experience, transforming a simple boat ride into an educational outing. On the other hand, a potential downside is the uncertainty about visiting the Hidden Beach, as government restrictions and demand can limit access, which might be frustrating for travelers eager for that iconic photo.
This tour is ideal for travelers who enjoy snorkeling, wildlife watching, and natural scenery. If you’re physically fit, comfortable swimming, and curious about Mexico’s protected marine areas, you’ll find this trip offers excellent value for the experience.


For underwater exploration, these Puerto Vallarta snorkeling spots offer different experiences
Your day begins at the Ecotours Vallarta office in Marina Vallarta, where a friendly guide will meet you for check-in. The check-in process is straightforward, and the meeting point’s proximity to public transportation makes it accessible. You’ll want to arrive a few minutes early to get geared up and ready for the adventure.
The boat ride to the Islands lasts roughly three hours, and it’s where the adventure truly begins. The boat itself is comfortable and well-equipped, with enough space to enjoy the views and keep an eye out for wildlife. The highlight here is the small group setting—most trips are limited to just 10 travelers, which means you get plenty of time with your guide and a more intimate experience.
Many reviews highlight the calmness of the boat ride and the possibility of glimpsing dolphins, whales, or sea turtles along the way. One traveler noted, “We saw some dolphins and sea turtles, which was a bonus,” emphasizing how wildlife sightings can add excitement.
Once on the islands, your naturalist guide will lead you in exploring the crystal-clear waters. Snorkeling gear is provided, and visibility often impresses visitors with its clarity. Expect to see colorful fish, sea birds like blue-footed boobies, and maybe even a baby nurse shark, as one traveler happily reported.
Guided instruction is included, which helps especially if you’re less experienced. The focus is on appreciating the marine ecosystem safely and responsibly. For those who love marine life, having a biologist as your guide means plenty of fascinating facts—some reviewers have called their guides “knowledgeable and caring,” noting the extra dimension of learning.
The Hidden Beach is the star attraction, but it’s important to understand that access is limited by government regulations. Visitors must be able to swim about 200 meters (656 feet) to reach it, and only between ages 10 and 65 are allowed to visit. This is primarily for safety reasons, given the challenging swim and the need for helmets and vests.
It’s worth noting that not everyone will get to visit the beach, as access depends on demand, weather, and tide conditions. The tour operators do their best, but no guarantees exist—some groups have a chance to enter, while others only see the beach from afar. When access is limited, a raffle system ensures everyone has a fair shot, but some travelers may find this unpredictable.
One reviewer shared a real experience: “The journey into the Hidden Cave is not for the faint of heart. The water into the cave can be treacherous but guides handle it superbly.” So, expect a real adventure, with some elements of risk and excitement.
If you don’t get into the Hidden Beach, don’t worry—the snorkeling itself is highly praised. Many visitors mention the beautiful fish and clear water, with some lucky enough to spot sea turtles or whales. The boat stops often, giving ample time to swim, relax, and enjoy the scenery.
Lunch is provided—a boxed meal with a sandwich, snacks, fruit, and bottled water. Reviewers mention the quality of the lunch, describing it as satisfying after a morning of activity. It’s a simple but effective way to refuel.
Back at the marina after about five hours, you’ll leave with plenty of photos and stories. Reviewers appreciate the smooth organization and the helpfulness of guides and crew. Overall, it’s been called “relaxing, organized, and full of wildlife,” making it an enjoyable and educational day.
At $120 per person, this tour offers good value, considering the expert guides, snorkeling gear, lunch, and wildlife encounters. The price includes the boat ride, which is often a highlight in itself, and the small-group setting ensures personalized attention. Keep in mind the additional fees—$10 for the park entrance and a small port fee—that are standard but should be factored into your budget.
Compare this to other tours, and you’ll find that the focus on conservation, small groups, and educational guides makes it stand out. Some reviews suggest that the experience exceeds expectations, especially if you’re interested in nature and wildlife.


This experience suits adventurous travelers who enjoy both snorkeling and wildlife watching. It’s perfect for those who appreciate small-group encounters and want a guided, educational perspective on Mexico’s marine ecosystems. If you’re comfortable swimming and enjoy a bit of physical activity, you’ll find this trip rewarding.
However, if your main goal is to visit the Hidden Beach, be prepared for some uncertainty—access depends on park rules and demand. Families with kids aged 10+ will find this suitable, but older travelers or those with mobility concerns might want to consider their comfort with the swim involved.
“Margarita (Maggie) is a fantastic tour guide. Extremely knowledgeable and caring. The journey into the Hidden Cave is not for the faint of heart. T…”

Is the Hidden Beach guaranteed?
No. Access depends on demand, weather, and tide conditions. The tour providers do their best to get everyone in, but it’s not always possible to visit the beach.
What is included in the tour?
The tour includes snorkeling gear, a biologist-guided experience, a boxed lunch, bottled water, and the boat ride. Entrance fees to the park are extra.
How long is the boat ride?
It lasts about three hours each way, so expect a total of around six hours on the water, including stops.
Are children allowed?
Yes, but only those between 10 and 65 years old are permitted to visit the Hidden Beach. Younger children can enjoy the snorkeling and scenery.
What should I bring?
Bring a towel, waterproof sunscreen, water, and perhaps a sweatshirt for the boat ride. Wear good shoes for getting on and off the boat.
Can I see whales or dolphins?
Yes, some reviewers mention sightings of whales, dolphins, and sea turtles during the trip, especially in season.
This tour offers a compelling mix of adventure, wildlife, and scenic beauty, all delivered by expert guides who care about conservation. The small-group setting ensures you’ll receive personalized attention, and the inclusion of educational insights makes it more than just a boat ride.
While the uncertainty about visiting the Hidden Beach might be a downside, most travelers find the snorkeling, wildlife sightings, and stunning views more than compensate. It’s a value-packed option for those who love exploring protected natural areas and want an authentic experience.
If you’re looking for a memorable, well-organized day on the water with a focus on nature and small-group charm, this tour is worth considering. Just plan ahead, stay flexible, and enjoy the incredible scenery of Puerto Vallarta’s most famous islands.
Note: Always check current conditions and book early to secure your spot. Weather and park regulations can influence the day’s activities, but your guides will do their best to ensure a rewarding experience.