Overview

• Guardamar del Segura reimposed red flags across roughly seven miles (about 11 km) of coastline after renewed sightings of Glaucus atlanticus.
• Lifeguards and municipal teams are conducting preventive sweeps and monitoring, with the public asked to report specimens to lifeguards, local police, or 112.
• La Cantería beach at Órzola in Lanzarote was temporarily closed and evacuated following separate sightings reported by lifeguards.
• The small pelagic nudibranch feeds on organisms such as the Portuguese man‑of‑war and can deliver painful stings that may trigger severe reactions in vulnerable people.
• Experts describe Mediterranean appearances as rare and suggest warming seas may explain the recent reports across the Costa Blanca and Canary Islands.