COLONIA
Why dive here
With 33+ marine species recorded in the area - including sperm whales - COLONIA offers some of Mar del Plata's richest wreck diving. Water ranges 10-21°C, warmest January, February, March.
Dive site Colonia is an old fishing trawler, sunk close to shore and sitting in only 4 metres of water. We love this site for its accessibility and how much detail you can pick out. It’s perfect for new divers or anyone wanting a relaxed, long bottom time. As you descend, the wreck appears quickly, its bow pointing towards the surface. The entire structure is covered in mussels, barnacles, and green algae. You can weave around the mast, explore the decaying wheelhouse, and peek into the cargo hold, which is now home to small schools of silversides. The visibility here can be a bit shifty, sometimes 5 metres, sometimes 2. But on a good day, with sunlight filtering through the shallow water, the wreck has an eerie, almost ghostly glow. Our favourite part is finding the massive spider crabs that often cling to the propeller shaft. Watch out for the local fishermen’s lines though, they sometimes drift near the site. We’d suggest going at high tide for the best visibility.
Typical COLONIA 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.
Cold water this month (avg 14°C). Drysuit or thick wetsuit (7mm+) recommended.
Nearest Dive Centres to COLONIA
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Conditions
Ocean conditions, forecast and tides for COLONIA
COLONIA Ocean Conditions
Monthly averages for COLONIA, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-38.05, -57.5) (0km away)
October Averages
Sea Temperature
14°C
56°F · Range: 11.1–16.9°C
Current Speed
2.83 cm/s
Direction: SE (135°)
Salinity
0 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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