Shamrock
Protected Area
Half Moon Underwater Archaeological Preserve
Why dive here
With 87+ marine species recorded in the area - including bull sharks, dolphins, hammerhead sharks, seahorses and sea turtles - Shamrock offers some of Florida Keys's richest wreck diving. Water ranges 19-32°C, warmest July, August, September.
The Shamrock, a former buoy tender, sits upright in about 23 meters of water off Key Largo. It’s a good spot for advanced open water divers, with a relatively straightforward descent down the mooring line. You’ll find barracuda often schooling around the mast, and it’s common to see large groupers lurking in the wreck's darker sections. Visibility usually holds well here, making it a solid wreck dive without extreme challenges.
Typical Shamrock Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to Shamrock
Dive shops near Shamrock
Divers Paradise
ACE DIVING
Juliet Sailing and Diving
Grove Scuba
Squalo Divers
Tarpoon Lagoon Divers Academy
Reviews for Shamrock
Conditions
Ocean conditions, forecast and tides for Shamrock
Shamrock Ocean Conditions
Monthly averages for Shamrock, sourced from NOAA NDBC + Copernicus Marine (EU) - nearest station: 8725520 - Fort Myers, FL (28km away)
October Averages
Sea Temperature
27°C
81°F · Range: 20.9–31.1°C
Air Temperature
26°C
79°F
Current Speed
0 cm/s
Direction: S (180°)
Salinity
35.98 PSU
Wind Speed
2.7 m/s
5.2 knots
Atmospheric Pressure
1014.5 hPa
Based on 5 years of monitoring data · Data sources: NOAA NDBC + Copernicus Marine (EU)
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