Florida Keys tourism overview of Key West reef and dive conditions.
Boat-only drift reef south of Key West.
Boat-only drift reef south of Key West.
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Cannonball Cut is a Key West reef-trace drift dive where broken coral ridges and sandy cuts create a moving route for boat divers. It is usually run from charter boats rather than as a fixed mooring stop, with reef fish, eels, turtles, and the occasional shark adding to the appeal when conditions line up.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
Up to 18m
Depth Note
Maximum depth reported as 18 m / 60 ft.
Best Season
Usually most comfortable in settled spring-through-fall weather, when offshore trips are easier to run and visibility is more often workable.
Typical Conditions
Offshore reef drift conditions with variable visibility, open-water surface motion, and enough flow that many crews treat the site as a current-managed pickup dive.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Plan this site as a boat-managed drift with clear pickup procedures, and expect current to shape both descent and recovery.
Access Restrictions
Boat access only; public dive descriptions note that Cannonball Cut is usually dived without a fixed mooring and is commonly run as a drift with live boat support.
Legal Notes
Florida Keys National Marine Sanctuary rules apply across the Key West reef tract, and operators should follow current protected-area and anchoring restrictions for the Western Sambo reef zone when running this site.
Community notes to help plan your visit.
Scuba Diving
Often dived as a drift dive; maximum depth is about 18 m.
Freediving
This site is generally described as a scuba drift stop rather than a dedicated freedive drop.
Snorkeling
Most public descriptions frame Cannonball Cut as a scuba-focused drift dive instead of a routine snorkel stop.
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
Florida Keys tourism overview of Key West reef and dive conditions.
Community dive-site entry noting no mooring and drift-style diving.
Local operator overview of Key West dive-site patterns and reef drift logistics.
Independent dive guide for Key West reef diving and common marine life context.
Know this site? Improve Spot Details.

Protected Key West reef with shallow snorkel water and boat-access scuba.

Eastern Sambo Reef is a research-only Key West bank reef.

Shallow Key West reef with classic coral and fish life.

Key West shallow boat reef with coral pinnacles and sharks.