Official regional diving guidance on visibility, gorgonians, passes, sharks, manta rays, and support infrastructure.
Passe de Mato
Outer-barrier pass with reef fish, gorgonians, and blue-water pelagics.
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About Passe de Mato
Passe de Mato is an outer-barrier pass in the deep south that rewards confident boat divers. The site is defined by a wall and blue-water channel, with reef fish, macro life, and gorgonian growth on the structure. Pelagic life can move through the pass, but swell and tide make the site less forgiving than sheltered lagoon dives. Treat it as a planned boat day rather than a casual stop, and pick a calmer window if you want the cleanest conditions.
Research Estimate At Passe de Mato
Conservative baseline from public research. No community dives logged yet.
Where Is Passe de Mato?
Passe de Mato Planning Details
Depth range, seasonality, and planning context.
Reported Depth
10m - 70m
Depth Note
Plateau starts at 10 m and descends to 70 m.
Best Season
April to September is the cleanest window, with cooler water and better visibility; whale-season crossings run mid-July to mid-September.
Typical Conditions
Located outside the barrier reef and subject to swell.
Safety & Access At Passe de Mato
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Exposed to swell; plan dives for conditions and manage depth carefully given the 70 m profile.
Access Restrictions
Boat-only access; not a good fallback when swell or pass flow is building.
Legal Notes
Treat the site as part of the Grand Lagon Sud management area and follow local marine rules and skipper guidance.
Local Intel For Passe de Mato
Community notes to help plan your visit.
Scuba Diving
Wall/plateau dive from about 10 m down to 70 m with blue-water pelagic potential in the channel.
Passe de Mato Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Passe de Mato.
Exposure Profile at Passe de Mato
Directional shelter context for incoming swell.
Recent Logged Visits At Passe de Mato
Community dive logs and visit reports for this site.
No Dive Logs Yet
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Dive Spot Log Averages At Passe de Mato
Average conditions based on logged dives & visits.
Passe de Mato Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Passe de Mato Guide - Sources and Updates
Last Updated
Research Sources
Operator listing naming Passe de Mato and confirming exploration dives from Noumea.
Official Grand Lagon Sud management plan and protected-area context.
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