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Hardbottom Cave sits within the French Reef Sanctuary Protected Area and features a swim-through cave formation. The area is described as a fun passage to explore, with depths around 20–35 ft. Divers often spot nurse sharks in and around the cave, and the site is noted for abundant marine life. Eagle rays are said to be likely in summer.
Depth range, seasonality, and planning context.
Reported Depth
6.1m - 10.7m
Depth Note
Depths given as 20–35 ft.
Best Season
Summer (for eagle rays).
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Includes a swim-through cave section, which introduces an overhead environment.
Access Restrictions
Located within a sanctuary protected area.
Community notes to help plan your visit.
Scuba Diving
A shallow scuba dive with a swim-through cave feature.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Last Updated
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