Beach shuts over deadly sea creatures

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.

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. (Daily Mail)