By Miguel Llanos,

Conservationists counted 615 dead dolphins along a 90-mile stretch of beaches in Peru, a wildlife group said Wednesday, and the leading suspect is acoustic testing offshore by oil companies.

"If you can count 615 dead dolphins, you can be sure there are a great many more out at sea and the total will reach into the thousands,” Hardy Jones, head of the conservation group, said in a statement after he and an expert with ORCA Peru walked the beaches.

Indeed, the head of a local fishermen's association told that he estimated more than 3,000 dolphins had died so far this year, based on what he saw in the water and on beaches

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