Brits heading to Spanish beaches will have to put up with miles of "smelly rotten sludge" on the sand between the shore and sea as holiday destinations "go green".
Environmentalists realise huge mounds of sea algae washed up by bad weather looks and smells awful and is hated by sunbathing tourists.
But they have asked local councils not to remove them as it is all part of marine life and conservation and the fight against climate change.
