A mysterious oil spill has forced the closure of three beaches in Valencia's Devesa-Albufera Natural Park.

The contamination, detected Tuesday morning, spread over two kilometers of coastline.

While the visible slick has dissipated, concerns remain about its impact on the fragile ecosystem.

Local authorities have initiated clean-up efforts, removing 35 cubic meters of waste so far.

The spill's origin remains unknown, though a ship leak is suspected.

Environmental groups are using this incident to highlight the potential risks of expanding Valencia's port, warning of increased maritime traffic near protected areas.

Officials assure that wildlife impact has been minimal, with only one bird requiring assistance.