Archive: https://archive.today/eZTEm From the post: >>Tourists have been banned from going into the water along an entire seven-mile stretch of Spain's Costa Blanca because of rare sea creatures with a potentially-fatal sting. Reg flags went up on beaches in the municipality of Guardamar del Segura just north of Torrevieja following the appearance of so-called blue dragons, which have been branded 'the most beautiful killer in the ocean'. The sea slug, also known as Glaucus atlanticus, feeds on the venomous cells of creatures like the deadly Portuguese man o'war, storing them within its body in concentrated doses. This process concentrates the toxin, making the blue dragon's poison far more potent than that of its prey. If someone handles or steps on a blue dragon, it can release these stinging cells into the skin.