Blue Dragons Appear in Spanish Beaches

In early September 2025, several beaches in Spain were closed after an unusual number of blue dragons washed ashore, surprising locals and scientists alike.

What are blue dragons?

  • Blue dragons (Glaucus atlanticus) are small sea slugs, about four centimetres long, that float on the ocean surface.
  • Unlike other sea slugs, they float upside down, maintaining an air bubble in their stomach to stay buoyant.
  • Their blue-and-white coloration provides camouflage: blue on top blends with the ocean surface, while white underneath blends with sunlight from below.
  • They feed on jellyfish and venomous siphonophores like the Portuguese man o’ war, storing their prey’s stinging cells ....
Do You Want to Read More?
Subscribe Now
To get access to detailed content
Buy November 2025 Issue

Already a Member? Login here

Take Annual Subscription and get the following Advantage
The annual members of the Civil Services Chronicle can read the monthly content of the magazine as well as the Chronicle magazine archives.
Readers can study all the material before the last six months of the Civil Services Chronicle monthly issue in the form of Chronicle magazine archives.
Be an Annual Subscriber

Related Content

Ecology & Environment