4m
    Mar del Plata, Argentina

    ETA IV

    Best months: Jan–Mar

    Why dive here

    With 33+ marine species recorded in the area - including sperm whales - ETA IV 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 4m

    Alright, Mar del Plata. We’re not talking tropical reefs here, but ETA IV has a charm all its own, especially for those who appreciate history and a good, solid wreck. This old barge, sitting flat in about four metres, is our pick for an easy, fascinating dive in the area. We love how the shallow depth really bathes the wreck in light, making the details pop – you can clearly make out the mast structure and the hull plates, barnacle-encrusted and softened by years underwater. It’s an excellent spot for photographers, particularly on a calm, sunny day when the visibility extends a good distance. You’ll spend your time exploring the open hold, which is now a bustling apartment block for various crabs and small fish. We’ve seen blennies darting in and out of crevices, and often find schools of silversides shimmering around the remaining upright sections of the mast. It’s a gentle dive, perfect for newer wreck divers or anyone looking for a relaxed exploration where you can really take your time to soak it all in. Just watch out for jellyfish during late summer; they can be quite prevalent.

    Typical ETA IV Dive Profile

    5mSafety Stop0m4m 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.

    Today05:1718:0212h 45m daylightGolden hour 17:29

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    Conditions

    Ocean conditions, forecast and tides for ETA IV

    ETA IV Ocean Conditions

    Monthly averages for ETA IV, 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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