Secondary season and visibility range reference.
Criminal Rock is a Praslin boat dive on broken granite.
Criminal Rock is a Praslin boat dive on broken granite.
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Criminal Rock is a north-east Praslin boat dive built around submerged granite and broken passages, with swim-through-style structure and regular fish movement. The run depends on weather, so it suits divers who are happy with operator-led logistics and a site that can feel different as sea state changes rather than a simple flat reef.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
15m - 25m
Depth Note
Reported as a mid-range granite dive with a weather-dependent boat approach from Praslin.
Best Season
Shoulder seasons, especially March-May and September-November.
Typical Conditions
Boat ride time varies with weather conditions.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Plan for boat-only access, a weather-sensitive run, and a rock-led layout. Stay within the briefed plan and keep situational awareness around the granite structure.
Access Restrictions
Boat access only; timing depends on weather and the operator's run plan.
Legal Notes
Confirm local marine access rules with the operator before departure.
Community notes to help plan your visit.
Scuba Diving
Rocky dive over submerged granitic formations, typically dived between 15–25 m.
Freediving
Only for experienced freedivers on calm days; the boat run and rocky layout make this a poor casual freedive pick.
Snorkeling
Not a primary snorkel site; the main structure sits below easy snorkel interest and is better handled as a scuba outing.
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
Secondary season and visibility range reference.
Shoulder-season diving windows and visibility baseline.
Historical alias Ros Kriminel on Grande Soeur.
Know this site? Improve Spot Details.

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Submerged granite reef with swim-throughs