5m
    Mar del Plata, Argentina

    Casco NN

    Best months: Jan–Mar

    Why dive here

    With 33+ marine species recorded in the area - including sperm whales - Casco NN 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 5m

    Casco NN, right off Mar del Plata, is one of those sites we always make time for. It’s a shallow dive, just five metres, but don’t let that fool you into thinking it's simple. This isn’t some artificial reef, it’s a genuine piece of history, and you can feel it. The wreck itself is pretty broken up, scattered across the seabed, which means you’re not just swimming over a single hull. Instead, you're navigating through a maze of twisted metal plates, exposed ribs, and scattered debris. We love how the light plays on the fragmented pieces, especially on a sunny day. It filters through the surface, illuminating schools of silversides that flicker around the metal, darting in and out of every crevice. You’ll spot crabs scuttling over the rust, hiding in nooks and crannies. Honestly, it feels like an archaeological dig, an open-air museum where you’re the explorer. We'd suggest going in the morning; the water tends to be calmer, and you get better visibility before any afternoon chop picks up. While it’s technically a wreck, the shallow depth and dispersed nature make it a great spot for newer divers looking for something a bit more interesting than just a reef, or for experienced eyes who appreciate the small details.

    Typical Casco NN Dive Profile

    5mSafety Stop0m5m 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.

    Today05:2018:0512h 45m daylightGolden hour 17:31

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    Conditions

    Ocean conditions, forecast and tides for Casco NN

    Casco NN Ocean Conditions

    Monthly averages for Casco NN, 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)

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