ocr: Peru's environmentalists have long be en concerne d with coastalindustrial pollution and the activities of its fishing in dustry. Uvertshing of anchovies almost resulted in their extinction in the 1970s. Today, att ention has switchedto the rise in the number of dolphins being caught - in drift nets - 3,000in1992. Dolphin m eat is being sold as a cheap alternative to pork and beef in some Peruvian markets. Concemn is also turned to the coca industry. Environmentalists fe: ar that Peru's andthe USA's policy of using: powerful airspayedherbicides to destroy the crop is adding to river P ollution ...