More than just filter sweeps actually. Just listen to the samples of Weddell seals on this page. Just do it.
via fischek:
"I've watched the "Encounters at the end of the world" movie by Werner Herzog and at one point a very interesting thing happened :) I know you only post stuff about the synths, but believe me these sounds are identical to analog filter sweeps and cracks, etc and what's producing them are Antarctic SEALS!"
They are indeed! Pretty amazing actually. The page linked above is from this site where you will find more samples and the source CDs. Directly below is the trailer for "Encounters at the end of the world" where you can hear some other interesting sounds.
Encounters at the End of the World Trailer
YouTube via THINKFilmNY
"Werner Herzog ("Grizzly Man," "Rescue Dawn") confirms his standing as poet laureate of men in extreme situations with ENCOUNTERS AT THE END OF THE WORLD. In this visually stunning exploration, Herzog travels to the Antarctic community of McMurdo Station, the hub of the US Antarctic Program and home to eleven hundred people during the austral spring and summer (Oct-Feb).
Over the course of his journey, Herzog examines human nature and Mother nature, juxtaposing breathtaking locations with the profound, surreal, and sometimes absurd experiences of the marine biologists, physicists, plumbers, and truck drivers who choose to form a society as far away from society as one can get."
