Mystery noise is fish farts
from
Fishing Magic
bq. Biologists have linked a mysterious, underwater farting sound to bubbles coming out of a herring's anus. No fish had been known to emit sound from its anus nor to be capable of producing such a high-pitched noise.
bq. "It sounds just like a high-pitched raspberry," says Ben Wilson of the University of British Columbia in Vancouver, Canada. Wilson and his colleagues cannot be sure why herring make this sound, but initial research suggests that it might explain the puzzle of how shoals keep together after dark.
Heh...
Posted by DaveH at November 17, 2003 1:40 PM