SPAIN River Arousa -- 15/12/2002 -- Fishing trawler cleans the small amounts of oil from the Prestige which have entered the estuary of the this fjord in southern Galicia. Recovery operations like this - along with tidal factors - have protected the estuaries of the Lower Rivers region from the oil that has leaked from the Prestige. A significant amount of the world's mussels are produced (mussel beds in background) in these waters