Small boats, expert naturalists, and a chance to swim into the Marietas’ famed Hidden Beach. This focused snorkel tour blends wildlife viewing with hands-on marine interpretation — but access to the beach is limited and regulated.
More ways to explore the area's outdoor wonders
A low-slung skiff slips away from Marina Vallarta at dawn and the bay’s heat gives way to salt and wind. By the time the Marietas’ dark cliffs come into view, the ocean is asking you to move: currents pull at the hull, waves carve white mouths into volcanic rock, and the boat’s naturalist points to a clifftop colony of blue-footed boobies that watch the sea like sentries.
Difficulty
moderate
Duration
5 hours
Fitness Level
Good cardiovascular fitness and basic swimming ability; participants should be able to climb ladders and handle short swims in current.
Wildlife
History
The islands are volcanic in origin and were formally designated a protected marine area under Mexico’s CONANP to preserve seabird colonies and reef habitat.
Conservation
Strict visitor quotas, bans on drones and certain behaviors, and requirements for reef-safe sunscreen help limit human impact and protect the park’s sensitive ecosystems.
Reserve your spot on the Marietas Islands snorkeling & Hidden beach (w/ restrictions) today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring reef-safe sunscreen
CONANP requires reef-safe sunscreen to protect coral; apply before arrival and pack extra for reapplication.
Prepare for ladder entry
All guests must climb a ladder on and off the boat—practice basic foot placement and wear water shoes for grip.
Expect a Hidden Beach lottery
Entry to the beach is limited—if you don’t win a spot you’ll remain aboard with the captain and still get excellent snorkeling and birdwatching.
Manage seasickness proactively
The crossing can be choppy; take antiemetic medication before boarding if you’re prone to motion sickness and sit mid-boat for less motion.
Reef-safe sunscreen
Protects marine life and conforms to park regulations.
summer
Water shoes
Improves footing on ladders and rocky boat decks.
summer
Rash guard or wetsuit top
Protects from sun, wind, and cooler water during early season trips.
spring
Small dry bag
Keeps phone, ID, and small items dry while you snorkel.