BANGKOK (AP) - Pollution in the Mekong River is putting the rare Irrawaddy dolphin in danger of disappearing from Cambodia and Laos, according to a study by an environmental group released Thursday.

A Cambodian government official, however, rejected the finding and demanded that the group apologize.

The World Wide Fund For Nature Cambodia said it has documented 88 deaths in the past six years of the Irrawaddy dolphin or Orcaella brevirostris along a 118-mile (190-kilometer) stretch of the Mekong River.

The Irrawaddy dolphin, which is related to orcas or killer whales, frequents large rivers, estuaries, and freshwater lagoons in South and Southeast Asia. The population in the Mekong is now believed to include as few as 64 members, the WWF said, down from 80 to 100 just three years ago.

Researchers from WWF Cambodia said they found levels of the pesticide DDT in the bodies of dead dolphin calves from the Mekong that were 10 times higher than in a similar population in India, plus environmental contaminants such as PCBs.  
Full Story