Irish holidaymakers warned over 'black flag' beaches at Spanish hotspots 

Talamanca Beach in Ibiza has been singled out over the catastrophic damage done to underwater plants by boats anchoring illegally off the coast and a treatment plant pumping salty wastewater into the sea. File picture

Irish holidaymakers have been warned against visiting nearly 50 ‘black flag’ beaches in Spain.

Spanish environmental campaign group Ecologists in Action has named and shamed the worst offenders in a report highlighting problems, including chemical pollution, marine waste, over-development and sewage discharges.