CATALINA B
Why dive here
With 33+ marine species recorded in the area - including sperm whales - CATALINA B offers some of Mar del Plata's richest wreck diving. Water ranges 10-21°C, warmest January, February, March.
The Catalina B isn’t about huge depths or pelagic encounters, but it’s a site we always enjoy for its sheer character. Just six metres down, this old tugboat wreck is remarkably intact, sitting upright on the seabed. You can swim right into the wheelhouse, which is a fantastic experience, particularly for newer wreck divers or those looking to hone their buoyancy in enclosed spaces. We love exploring the stern, where the prop is still visible, often surrounded by schools of small silversides. What truly makes the Catalina B special for us is the way the cold water marine life has embraced it. The wreck itself is a tapestry of anemones and sponges, bursting with colour. Look closely, and you’ll spot nudibranchs, crabs scuttling amongst the growth, and often a grumpy-looking scorpionfish tucked away. It’s a photographer’s delight, especially on a bright day when the natural light filters through, illuminating the internal structures. The visibility here can be temperamental, but when it’s good, the clarity transforms the wreck into something quite magical, almost like diving a forgotten museum piece. Our advice? Go slow. There's always something new to spot if you take your time.
Typical CATALINA 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.
Reviews for CATALINA B
Conditions
Ocean conditions, forecast and tides for CATALINA B
CATALINA B Ocean Conditions
Monthly averages for CATALINA 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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