Glider eavesdrops on whales

摘要

Quietly slipping to a depth of 1,000 metres, an undersea glider is recording whale song off the coast of Hawaii in unprecedented detail.rnIt is the first acoustic-equipped glider to be deployed to this depth in the ocean to target a specific marine mammal. Whales click or vocalize to communicate and to find food, and use echolocation to navigate, but surface acoustic devices typically can't record their sounds.