ACADIA NATIONAL PARK — Scientists and volunteers in Maine are working together to determine what killed a minke whale found dead on a beach at the Acadia National Park.

On Wednesday researchers with the College of the Atlantic’s Allied Whale center, the University of Maine, the Maine Marine Environmental Research Institute and others conducted the necropsy on the carcass of the male minke whale.

The Bangor Daily News says the 23-foot long dead whale was first spotted near Head Harbor Island on Aug. 12. It washed ashore at Sand Beach at Acadia National Park on Aug. 21.

There are an estimated 185,000 minke whales in the North Atlantic Ocean. They are not listed as endangered or threatened, although they are protected under the federal Marine Mammal Protection Act.