Float through Sac Actun’s clear caverns on a guided half-day snorkeling trip that pairs cenote swims with zipline and rappel through the Mayan jungle. Expect ancient cave formations, haloclines, a regional lunch, and moderate exertion over roughly 3–4 hours.
More ways to explore the area's outdoor wonders
The light from the jungle thins to a green gold as you step from the van and into a clearing where vines part for a sinkhole. Below, the cenote water is glass — an entry point into passages that have carried fresh water beneath the Yucatán for millennia. You slip into the cool salt-sweet mix and let the current of Sac Actun guide you through caverns pierced with stalactites and stalagmites, while a halocline shivers the view where fresh and salt layers meet and bend the world like an old mirror.
Difficulty
moderate
Duration
3–4 hours
Fitness Level
Requires a moderate level of fitness: comfortable swimming/snorkeling, able to rappel and walk short uneven trails.
Wildlife
History
Cenotes were vital to Maya life and ritual; Sac Actun’s passages formed over millennia as sea levels rose and fell, connecting inland aquifers to the Caribbean.
Conservation
Cave formations and cenote waters are fragile—use only reef-safe products, avoid touching formations, and follow guide rules to limit contamination and erosion.
Reserve your spot on the Half Day Underground River Snorkeling Guided Tour Riviera Maya today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring a quick-dry change of clothes
You’ll be wet from snorkeling and ziplines—pack a towel and dry clothes stored in provided lockers.
Use reef-safe sunscreen or none
Oils damage cave and cenote ecosystems; rinse immediately if you use sunscreen before entering water.
Arrive hydrated and eat light
Moderate exertion plus heat makes hydration important; bottled water is provided but bring a personal bottle for before/after.
Know medical restrictions
Not suitable for pregnant travelers or people with serious heart/spinal conditions; disclose medical info during booking.
Swimsuit and quick-dry layers
Wetsuit not required; layers help post-swim comfort in changing weather.
Reef-safe sunscreen or none
Protects water quality—prefer mineral-based lotions or avoid applying before entering water.
summer
Waterproof camera or dry bag
Capture cavern features and wildlife while keeping gear dry.
Closed-toe water shoes
Provide grip on wet limestone edges and comfort during short hikes and rappels.