- Guardamar del Segura beaches remain closed to swimmers due to multiple sightings of the blue dragon sea slug (Glaucus atlanticus).
- Torrevieja authorities report some sightings but have not closed beaches; no stings reported so far.
- The blue dragon’s sting can cause intense pain, vomiting, and allergic reactions.
- Authorities urge bathers not to touch these creatures and to alert lifeguards if spotted.
- In case of stings, rinse with salt water, apply cold compresses, and seek medical help instantly.
Swimming Ban Imposed in Guardamar Due to Blue Dragon Sea Slugs
The coastal town of Guardamar del segura in Alicante has once again prohibited swimming in all its beaches following the appearance of several specimens of the blue dragon sea slug (Glaucus atlanticus) over the past days. This marks the third time since last Wednesday that the municipality has enforced a swimming ban as a precautionary measure to protect beachgoers.
These intriguing yet hazardous marine creatures have been spotted mainly on popular beaches such as Vivers, Ortigues, and the central beach of Guardamar, prompting local authorities to remain vigilant.
What is the Blue Dragon Sea Slug?
The blue dragon is a small, strikingly beautiful marine mollusk found floating on the surface of temperate and tropical oceans. despite its alluring appearance, it is capable of delivering a sting that can cause:
- Intense pain at the site of contact
- Vomiting
- allergic and adverse reactions in sensitive individuals
Because of this, the presence of these creatures has triggered safety concerns, especially during peak beach seasons.
Authorities’ response and Safety Measures
The guardamar Local Police have taken to social media to urge beach visitors for “maximum caution and cooperation,” reassuring the public that lifeguard teams and local safety personnel are actively monitoring the coastline to guarantee public safety.
Meanwhile, the nearby municipality of Torrevieja has spotted “three or four” debilitated blue dragons at La Mata beach over the weekend. Although swimming has not been prohibited there, the beach currently displays a red flag due to sea conditions - unrelated to these creatures. Officials emphasized that no stings have been reported in Torrevieja to date.
Key Safety Tips for Beachgoers
- Do not touch the blue dragon, not even with gloves-contact can result in a painful sting.
- If you spot one,inform a lifeguard or local authority immediately.
- In case of a sting:
- Rinse affected area thoroughly with salt water (avoid fresh water).
- Apply cold compresses to reduce pain and inflammation.
- Seek medical help promptly at the nearest health center or lifeguard station.
At a Glance: Blue Dragon Sea Slug Safety Overview
| Aspect | Details |
|---|---|
| Scientific Name | Glaucus atlanticus |
| Appearance | Small, radiant blue and silver, floating mollusk |
| Habitat | Coastal waters, floating on surface |
| Risks | Painful sting, vomiting, allergic reactions |
| Current measures | Swimming ban in Guardamar, monitoring in Torrevieja |
What’s next?
As summer progresses and temperatures rise, the risk of encountering blue dragons may increase. Authorities in Alicante’s coastal towns continue to emphasize vigilance and public education to ensure a safe beach habitat.
Visitors are encouraged to stay updated on municipal warnings and comply with safety instructions. Taking precautions around marine wildlife helps protect both humans and fragile ecosystems along Spain’s beautiful Mediterranean coast.
Reported by: Noticias ABC Comunidad Valenciana – August 25, 2025