6m
    Mar del Plata, Argentina

    CATALINA B

    Best months: Jan–Mar

    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.

    Best timeJan–Mar
    WetsuitA 5mm wetsuit
    Marine lifeSperm Whales · 33+ species recorded
    Water10-21°C · warmest January, February, March
    CharacterWreck dive · max 6m

    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

    5mSafety Stop0m6m max~60 min estimated bottom time

    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.

    Today05:1217:5712h 45m daylightGolden hour 17:24

    Reviews for CATALINA B

    Sign in to write a review

    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)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    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)

    Plan & book

    Ways to dive Mar del Plata, from day trips to liveaboards.

    Day trips & courses

    via GetYourGuide

    Guided dives, courses and snorkel trips with instant booking.

    Find dive trips in Mar del Plata

    Places to stay

    via Booking.com

    Hotels and dive resorts near Mar del Plata.

    Search stays in Mar del Plata

    Dive insurance

    Most travel insurance excludes or limits scuba. Check what you need before you go.

    Dive insurance explained

    Partner links: we may earn a commission if you book, at no extra cost to you. How we make money

    Where to Stay near CATALINA B

    Prices from Booking.com. We may earn a commission at no extra cost to you.

    Back to Mar del Plata