Historic reef table placing Las Dos Hermanas at 14.3 m depth.
Boat-access canyon dive in Chachacual Bay
Boat-access canyon dive in Chachacual Bay
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Protected-bay logistics and park rules make a guided boat operator the normal way in.
Boat-led canyon and reef dive in Chachacual Bay, where the pull is the rock-walled route, coral patches, and Pacific marine life around a protected Huatulco headland. Plan on guide-led logistics, park rules, and conditions that suit divers who want a structured open-water day rather than a casual shore hop.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
3m - 14.3m
Depth Note
Reef records show shallow coral communities at 3-6 m and a maximum documented reef depth around 14.3 m.
Best Season
mid-October to January
Typical Conditions
Protected-bay canyon dive with mixed coral and rock terrain, clear-water windows, and weather-sensitive conditions.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Use an authorized guide, keep buoyancy tight in canyon sections, and avoid coral contact.
Access Restrictions
Guided boat access through Huatulco National Park; do not plan on independent shore entry.
Legal Notes
Park rules apply, including authorized guides, capacity limits, no anchor damage, and no coral contact.
Community notes to help plan your visit.
Scuba Diving
Best as guided scuba; canyon passages and rock structure reward divers with solid buoyancy control.
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
Historic reef table placing Las Dos Hermanas at 14.3 m depth.
Huatulco destination guide noting Chachacual / Dos Hermanas canyons, manta rays, turtles, and boat-based access.
Huatulco diving overview with typical visibility and seasonal planning window.
Huatulco National Park management plan listing Dos Hermanas among coral communities and the park's access rules.
Local operator listing with parking, boat, guide, and facility support in Huatulco.
Huatulco dive guide with Dos Hermanas in Chachacual, canyon terrain, and local marine-life commentary.
Recent reef study describing Dos Hermanas as a reef community away from settlements and river mouths, with shallow transects at 3-6 m.
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