A seven-mile stretch of Spain's Costa Blanca has been closed to swimmers following the appearance of so-called blue dragons, ...

The stings are incredibly painful, causing nausea, vomiting, and though unlikely, may cause death in people with severe ...

Swimmers were told to rinse with saltwater and seek medical attention if they experienced stings or skin irritation.

Swimmers banned on Spain's Costa Blanca after venomous creatures known as Blue Dragons wash ashore causing safety alerts.

An extraordinary sighting of the “blue dragon” in the Mediterranean. The exceptional sighting of the blue dragon in ...

The Glaucus atlanticus is colloquially named the “blue dragon sea slug” for its resemblance to the mythical dragon, and ...

Dangerous sea slugs have forced the closure of a popular stretch of coast following multiple sightings of the pair of ...

A popular area of beaches was closed by authorities after they found deadly sea creatures in the area that could potentially ...

The “most beautiful killer in the ocean” feeds on the Portuguese man o’ war and stores its venom in a more concentrated form, making it highly dangerous.

Beachgoers in Thailand have been alerted to beware of venomous blue dragon sea slugs (Glaucilla sp) after reported sightings ...

Beaches in the town of Guardamar del Segura, in southeastern Spain, closed earlier this week after the discovery of two ...