Coastal safety update

Beaches along a seven-mile stretch of Costa Blanca in Spain were closed after sightings of the blue dragon sea slug.

Blue dragons close seven mile stretch on Costa Blanca

Guardamar del Segura issued a red flag and banned swimming on Vivers Beach after two blue dragon specimens were spotted. The blue dragon, Glaucus atlanticus, is tiny but stores stinging cells from its prey, making its sting more potent. The ban covers about seven miles of coastline and will stay in place while officials monitor the situation.

Authorities say beachgoers must wash salt water if they are stung and seek medical help if needed. Lifeguards and town workers are patrolling the beaches, and some sunbathers have ignored the ban, risking fines. In nearby areas, Santa Barbara beach near La Linea de la Concepcion close to Gibraltar was reopened with a yellow warning flag after a sighting, showing variations in response along the coast.

Coastal towns face a tough balance between safety and tourism. The blue dragon carries real risk in a small body, yet the remedy is a precautionary ban that may deter visitors while protecting health. Clear communication and consistent enforcement will be key to avoiding confusion and harm.

Climate and sea currents can bring unusual wildlife into popular spots. The risk is not only the sting but the reputational impact on local authorities and the travel industry. When warnings arrive with clear guidance, the public may trust measures; if not, trust can erode.

Highlights

The coast will keep testing how quickly warnings translate into daily choices.