Alejandro Marcos B
Why dive here
With 33+ marine species recorded in the area - including sperm whales - Alejandro Marcos B offers some of Mar del Plata's richest wreck diving. Water ranges 10-21°C, warmest January, February, March.
Alejandro Marcos B is a fantastic little wreck, and a perfect entry point for exploring Mar del Plata's underwater history. We love it because it’s so accessible, sitting in just 7 metres of water. The visibility can be a bit hit or miss, typical for the area, but when it’s good, you can clearly make out the ship’s structure, a steel hull that's been down there long enough to develop some real character. What makes it special is the way the sea has reclaimed it. Patches of anemones cling to the metal, waving gently in the surge, and you’ll spot a surprising number of crabs scuttling amongst the plates. Shoals of small fish dart in and out of the shadows cast by the wreckage, often silhouetted against the filtered sunlight. It’s a site that really shows the beauty of a new ecosystem forming. Our top tip is to go on a calm day, preferably after a few days of settled weather, for the best chance at decent visibility. It’s ideal for newer wreck divers or photographers wanting to practice their skills in shallower conditions.
Typical Alejandro Marcos B 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.
Alejandro Marcos B Wreck History
Vessel Type
fishing vessel
Cause
unknown
The Alejandro Marcos B is a classic coastal wreck dive located in the bustling port city of Mar del Plata. While the specific details of its sinking are unknown, its name and location strongly suggest it was a local fishing vessel that ended its career on the seabed. Resting at a comfortable depth of 7 meters, with parts of its superstructure still visible from the surface on clear days, it is an inviting site for divers of all skill levels. Its shallow position makes it a perfect second dive of the day or a training ground for new wreck divers. Over the years, the wreck has blossomed into an artificial reef, offering shelter to the area's rich marine life, including crabs, anemones, and schools of coastal fish.
Nearest Dive Centres to Alejandro Marcos B
Dive shops near Alejandro Marcos B
CEB Escuela de Buceo
Diving Center - Centro Integral de Buceo
Aquabaires Buceo
Pilar Buceo
Reviews for Alejandro Marcos B
Conditions
Ocean conditions, forecast and tides for Alejandro Marcos B
Alejandro Marcos B Ocean Conditions
Monthly averages for Alejandro Marcos B, 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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