This summer, the beaches of Valencia and Alicante have seen a significant increase in the number of “fried egg” jellyfish, a species that, despite its unusual appearance, is harmless to humans.
These jellyfish, scientifically known as Cotylorhiza tuberculata, have been spotted in large numbers across the Mediterranean and the Mar Menor, particularly from Puerto de Sagunto to Torrevieja.
Harmless but concerning for beachgoers
Their presence can cause concern among swimmers. However, the sting of the “fried egg” jellyfish is generally mild, causing only slight irritation or a burning sensation. According to MedusApp, a tool that allows beachgoers to report jellyfish sightings, numbers of these jellyfish have surged this season.
The Oceanogràfic in Valencia notes that these jellyfish are typically more abundant towards the end of summer and the beginning of autumn. They often accompany small fish from the Carangidae family and can form large swarms, sometimes stretching for kilometres.
Importance of respecting marine life
Experts remind the public that these jellyfish play a vital role in the marine ecosystem. Therefore, they should not be removed from their natural habitat. Valencia’s local ordinances even impose heavy fines—up to €3,000 —for any actions that harm marine life.
Fried egg jellyfish
The Almardà, Corinto, and Malvarrosa Neighboruhood Association has also reported the presence of these jellyfish in the Mediterranean, visible from the shore. While generally harmless, those with allergies should exercise caution. Lifeguards are using loudspeakers to inform swimmers of their presence
Also read: Thousands of ‘fried-egg’ jellyfish invade Mar Menor beaches