Nature's Music Getting Softer

When Krause drops his microphones into the pristine coral reef waters of Fiji, he picks up a raucous mix of sighs, beats, glissandos, cries, groans, tones, grunts, beats and clicks.

The water pulsates with the sound of creatures vying for acoustic bandwidth. He hears crustaceans, parrot fish, anemones, wrasses, sharks, shrimps, puffers and surgeonfish. Some gnash their teeth, others use their bladders or tails to make sound. Sea anemones grunt and belch. Every creature on the reef makes its own sound. But half a mile away, where the same reef is badly damaged, he can only pick up the sound of waves and a few snapping shrimp. It is, he says, the desolate sound of extinction.

Krause, whose electronic music with Paul Beaver was used on classic films like Rosemary's Baby and Apocalypse Now, and who worked regularly with Bob Dylan, George Harrison and The Byrds, has spent 40 years recording over 15,000 species, collecting 4,500 hours of sound from many of the world's pristine habitats.