ETA IV - Mar del Plata
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.
- Location
- Mar del Plata, Argentina, South America
- Coordinates
- -34.357788, -57.957780
- Type
- wreck
- Maximum Depth
- 4m
Best Time to Dive in Mar del Plata
The warmest water temperatures in Mar del Plata occur in January, averaging 26.7°C. The coolest conditions are in July at 11.0°C.
Monthly Water Temperatures
- January: 26.7°C
- February: 25.8°C
- March: 24.1°C
- April: 20.3°C
- May: 16.3°C
- June: 13.0°C
- July: 11.0°C
- August: 12.2°C
- September: 14.8°C
- October: 18.2°C
- November: 22.3°C
- December: 24.8°C
Nearby Dive Sites in Mar del Plata
- 192 - B - 4m (wreck)
- 201 - A - M.O.P. - 8m (wreck)
- 245 C - 7m (wreck)
- 252-C - 5m (wreck)
- 256 B - 3m (wreck)
- 325 C - 6m (wreck)
- ABucear - Centro de Buceo
- ABucear - Scuba Diving Center
- ADMIRAL GRAF SPEE - 8m (wreck)
- A.H.V.R NO.4 - 3m (wreck)
- ALBA - 5m (wreck)
- ALDOSIVI - 2m (wreck)
- Aldykir II - 1m (wreck)
- Alejandro Marcos B - 7m (wreck)
- ALFA II - 1m (wreck)
Nearest Dive Centres to ETA IV
- ABucear - Centro de Buceo
- ACUATIKOS
- Alfa Buceo - ["PADI"]
- AM DIVE
- Amphibio
- Aquabaires Buceo - ["PADI"]
Marine Life in Mar del Plata
Home to 33 recorded species including 19 reef fish, 7 sharks & rays, 3 whales & dolphins, 2 other, 1 crabs & lobsters, 1 sea snails & nudibranchs.
Notable Species
- South Atlantic Elephant-seal (Mirounga leonina) - Whales & Dolphins
- Bluewing Searobin (Prionotus punctatus) - Reef Fish
- Sperm Whale (Physeter macrocephalus) - Whales & Dolphins
- Porgy (Pagrus pagrus) - Reef Fish
- American Elephantfish (Callorhinchus callorynchus)
- Bangamary (Macrodon ancylodon) - Reef Fish
- Elf (Pomatomus saltatrix) - Reef Fish
- Silverside (Odontesthes incisa) - Reef Fish
- Filetail Fanskate (Sympterygia lima) - Sharks & Rays
- Atlantic Lookdown (Selene vomer) - Reef Fish
- Blueback Mullet (Mugil liza) - Reef Fish
- Smallnose Fanskate (Sympterygia bonapartii) - Sharks & Rays
- Kingfish (Menticirrhus americanus) - Reef Fish
- American Harvestfish (Peprilus paru) - Reef Fish
- Ronco (Micropogonias furnieri) - Reef Fish
- Chilean Angel Shark (Squatina armata) - Sharks & Rays
- South-American Silver Porgy (Diplodus argenteus) - Reef Fish
- Apron Ray (Discopyge tschudii) - Sharks & Rays
- Eyespot skate (Atlantoraja cyclophora) - Sharks & Rays
- Moray (Muraena helena) - Reef Fish
Recommended Packing List for ETA IV
Based on average water temperature of 19.1°C, currents 3 cm/s.
- Wetsuit (3-5mm) - comfortable for 19°C water
- Mask - essential for every dive
- Fins
- BCD - buoyancy compensator
- Regulator - your most safety-critical piece of gear
- Dive Computer - tracks depth, time, and NDL
- Surface Marker Buoy (SMB) - essential for boat pickups
- Dive Torch - useful for crevices and colour at depth
- Underwater Camera - capture your diving memories