DEMA Trader
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 - DEMA Trader offers some of Florida Keys's richest wreck diving. Water ranges 19-32°C, warmest July, August, September.
The DEMA Trader wreck is one of those sites we always try to hit when we're in the Upper Keys. What we love about it is the way this old freighter just sits upright and proud on the sand, not too deep, meaning plenty of bottom time to really explore. You can still see the mast structure, and the wheelhouse is a fantastic swim-through, full of the kind of spooky light shafts that make for great photos. Our favourite part is the stern, where the prop is still mostly intact, drawing in Goliath groupers that often just hang out under the rudder, huge and unbothered. Schools of grunts and snapper stream in and out of the cargo holds, and we’ve even spotted nurse sharks tucked away in the darker recesses. It’s a pretty easy dive, not usually much current, making it perfect for divers who want to take their time getting to know a proper shipwreck without any major challenges. We'd suggest getting there early to beat the crowds, as it can get a bit busy on weekends.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Nearest Dive Centres to DEMA Trader
Dive shops near DEMA Trader
Divers Paradise
Juliet Sailing and Diving
ACE DIVING
Grove Scuba
Underwater Unlimited
Austin's Dive Center
Reviews for DEMA Trader
Conditions
Ocean conditions, forecast and tides for DEMA Trader
DEMA Trader Ocean Conditions
Monthly averages for DEMA Trader, 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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