Atlantic Ocean apparently disappearing from the coast of Mar del Plata in Argentina have gone viral on social media. Some posts claimed that the sea had receded nearly 23 kilometres overnight and warned that the region was facing a major natural disaster.
The footage showed exposed seabeds, rock formations and boats appearing to rest on the ocean floor. Some dead fish were also reportedly seen, leading users to claim that the sea had completely dried up.
However, Argentina’s national media agency clarified that the sea had temporarily receded, but there was no permanent disappearance of seawater. It explained that the exposed areas were usually covered by waves and became visible because of a temporary fall in the water level.
Marine scientists said the phenomenon was linked to strong winds and tidal changes. Persistent winds can push seawater away from the coast, a process known as wind setdown. The effect can cause the water level to fall sharply for a short period.
Experts also clarified that the situation was not an indication of an approaching tsunami. A tsunami is generally triggered by events such as an undersea earthquake and is followed by powerful waves. In this case, the water reportedly returned to normal levels within a few hours.
Therefore, the viral claim that the Atlantic Ocean has permanently dried up near Argentina is misleading. The incident was a temporary and natural coastal phenomenon rather than a major disaster.
🚨 SHOCKING SCENE IN ARGENTINA 🌊
– The sea reportedly moved 23 KM away within an hour, leaving boats stranded and fish dead. What caused this? 👀 pic.twitter.com/o1CXNffzDp
— Talha Nawaz (@TalhaDigital007) September 9, 2026