U.S. navy dolphins will take part in a NATO exercise to find some of the 80,000 mines and other munitions rusting off Norway’s coast since Germany’s World War Two occupation, officials said on Friday.

The “Blue Game,” the name given to the exercise, will take place from April 23 to May 11. It follows a similar two-week exercise in the Baltic Sea last year in which 83 mines were cleared, according Rune Hausken, commander of the mine clearance diving team for south Norway.

“It will be the biggest mine clearing exercise off Norway ever,” Hausken said of the exercise to take place off the south coast of Norway.

Yahoo! News: Dolphins to Help Find WW2 Mines.