Official reserve page for access, operator guidance, and reserve status.
Chayo’s Cave: boat-accessed cave swim-through with sea lions.
Chayo’s Cave: boat-accessed cave swim-through with sea lions.
Chayo’s Cave is a boat-accessed swim-through on Isla San Pedro Mártir, built around a short horseshoe-shaped overhead passage. It is a friendly cave-style dive for newer scuba divers who can keep steady buoyancy and follow a guide. Sea lions are often part of the experience near the entrance and exit, so the best dives stay calm and tidy.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
Up to 16.8m
Depth Note
Max depth 55 ft.
Best Season
Late fall through spring, when wind and heat are easier to manage.
Typical Conditions
Warm water in the high 70s to low 80s F, with boat logistics and wind shaping the day more than the site itself.
Site conditions, restrictions, and access requirements.
Site Conditions
Safety Notes
This site includes a swim-through in an overhead environment; stay within training and comfort limits and maintain good buoyancy and awareness through the cave.
Access Restrictions
Boat-only access; use a CONANP-accredited operator or a private or rented boat.
Legal Notes
Inside the Isla San Pedro Mártir Biosphere Reserve; follow reserve access rules.
Community notes to help plan your visit.
Scuba Diving
Short overhead swim-through with a beginner-friendly feel, but still an overhead feature that rewards steady trim and unhurried movement.
Freediving
Not a natural freedive target; the overhead swim-through makes scuba the better fit.
Snorkeling
Not a primary snorkel site; the main draw is the guided dive and sea lions around the passage.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Official reserve page for access, operator guidance, and reserve status.
Operator itinerary that includes Chayos Cove on San Pedro Martir dive days.
Zone report listing Chayo's Cave (San Pedro Martir) among recognized site names.
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