About Sofía
Sofía Reyes is Zeach's Mediterranean Coast Editor, responsible for all beach content across Spain, Portugal, Morocco, and the western Mediterranean basin. A former marine biologist, she brings scientific rigour to water quality assessment that goes beyond the certification labels — she understands what the EU Bathing Water Directive classifications actually mean at the level of bacterial counts, testing protocols, and seasonal variation.
Based in Barcelona, Sofía has spent eight years documenting Blue Flag beaches along the Spanish coastline, from the Costa Brava in the north to Tarifa at the tip of Andalusia, as well as the Balearic and Canary Islands. She knows which beaches hold their certification year after year and why, and which ones have had it pulled — and what that means for swimmers.
Field research approach
Sofía's research combines data verification against official EEA bathing water records with seasonal field visits to higher-priority beaches. She cross-references Spanish Ministerio para la Transición Ecológica water quality data with on-the-ground conditions — lifeguard provision, flag display, facility standards — to produce content that reflects what visitors actually encounter rather than what the certification paperwork says.
For the Portuguese coast, she works closely with Agência Portuguesa do Ambiente data and the national SNIAMB water quality portal. For Morocco, she tracks the growing FEE North Africa programme through the Fondation Mohammed VI pour la Protection de l'Environnement, one of the most active national operators in the programme.
Why Spain dominates Blue Flag rankings
Spain holds more Blue Flag beaches than any other country — 746 as of the most recent certification cycle. Sofía's analysis of why comes down to infrastructure investment over decades: Spain committed to coastal water treatment and beach management standards in the 1990s ahead of EU requirements, creating a generation of beach managers with deep certification expertise. The result is a programme with very low annual revocation rates.
This long-term perspective shapes how Sofía writes about Spanish beaches. She doesn't treat certification as a binary fact but as a track record — a beach certified for 20 consecutive years tells a different story than one that received its first flag last season.
Reviewed and edited by
All content by Sofía Reyes is reviewed by Arjun Nair, Zeach's Coastal Research Editor, before publication.