Regional guide entry describing the cube-shaped rock and shore access for the site.
Cube-rock reef dive in Culebra.
Cayo del Agua is a classic Culebra cayo dive built around a cube-shaped rock rising from sandy bottom, so the route feels like a compact reef loop rather than a long swim. The top and outer faces are coated in coral and sponge growth, and the surrounding sand and ledges hold plenty of fish. Plan for shore or small-boat access, strong tide awareness and a site that can swing from mild to stronger current depending on conditions.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
9.1m - 18.3m
Depth Note
The cube-shaped rock rises from roughly 60 ft at the sand to about 30 ft at the top.
Best Season
Calm tide windows
Typical Conditions
Generally clear water with currents that can be mild to moderate and shift with the tide; choose a calm boat or shore window.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Current can change with the tide, so plan conservatively and treat the open-water side as the exposed face of the site.
Access Restrictions
Access is typically by shore or small inflatable craft to a mooring buoy, and conditions depend on wind, wave and current.
Legal Notes
Cayo del Agua sits in a conservation-managed area, so access should follow local mooring and permitted-access protocols.
Community notes to help plan your visit.
Scuba Diving
The key feature is a cube-shaped rock with coral and sponge growth, so the dive is usually a slow loop around the rock and its sandy base.
Snorkeling
The site is shallow enough for surface viewing in calm water, but the current can build with the tide and the open side needs caution.
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
Regional guide entry describing the cube-shaped rock and shore access for the site.
USACE planning document describing Cayo del Agua access by inflatable craft and dependence on wind, wave and current.
Know this site? Improve Spot Details.

A Culebra arch-and-reef dive with coral, sponges, and variable current.

Sheltered shallow Culebra boat site with easy snorkeling and cable hazard.

Sheltered reef with tricky currents and good snorkeling.

Sheltered Culebra cove with reef, seagrass, and easy snorkel water.

Current-driven reef drift in Culebra's reserve

Coastal reserve reef with coral fingers and tide-driven current.