Mar del Plata, one of the main tourist destinations on the Argentine Atlantic coast, is experiencing an increase in jellyfish sightings near the shore this season. The phenomenon is causing concern among visitors and residents.
In areas like Punta Mogotes, lifeguards have observed a higher concentration of these organisms, also known as sea jellies. Their presence is linked to recent changes in sea conditions.
Measurements indicate water temperatures above the historical average. While the usual is around 19 °C, values exceeding 22 °C have been recorded at various beaches.
Higher temperatures and changes in the ecosystem
The thermal increase favors the reproduction and approach of jellyfish to bathing areas. Although these organisms move with currents and winds, the warmer sea intensifies their proliferation.
While their appearance in summer is not unusual, the current magnitude is related to a particular environmental context. The warming of the water modifies coastal ecological dynamics.
Moreover, on days with little wave activity, jellyfish tend to concentrate more near the beach. Therefore, the likelihood of contact with swimmers increases significantly.
This scenario reflects how small thermal variations can alter the tourist experience. It also exposes the sensitivity of marine ecosystems to climate changes.
Risks of jellyfish stings
Jellyfish have tentacles with stinging cells designed to capture food. When they come into contact with human skin, they release toxins that cause burning and redness.
In most cases, the sting causes local irritation and a burning sensation. However, in sensitive individuals or children, it can be more bothersome. Upon contact, it is recommended to exit the water and avoid rubbing the affected area. Rubbing can activate more stinging cells.
Then, it is advisable to rinse with sea water and apply local cold. The use of vinegar can help neutralize toxins, and in severe symptoms, one should seek medical attention.
Even apparently inactive tentacles can release toxins. Therefore, they should not be touched directly.
Prevention and recommendations at the beach
To reduce risks, it is crucial to heed the lifeguards’ instructions. They monitor in real-time the presence of jellyfish and the state of the sea.
If specimens are observed floating or on the shore, it is advisable to avoid bathing in that area. Additionally, the use of UV shirts or light neoprene limits direct contact with the skin.
Entering the sea with caution, especially on calm days, also reduces the likelihood of stings. Thus, prevention becomes the main tool.
Although they do not always represent a serious danger, these episodes highlight the interaction between climate and marine life. Understanding this dynamic is essential for coexisting responsibly with the coastal ecosystem.
