Sweden was at the forefront of keeping an eye on the Soviet Union during the Cold War. And even after the collapse of the USSR, the Swedish navy suspected the Russians of running covert submarines into their waters. In 1994, sonic recordings that sounded suspiciously like submarine activity caused a diplomatic row between Sweden and Russia that went on for ten years.
This diplomatic conflict raged on until 2004 when scientists made a vital diplomatic discovery: Herring’s fart. Sent out to investigate the sound, researchers Magnus Wahlberg and Hakan Westerberg discovered that the hissing came from bubbles filled with gas, which herrings secrete through their anuses to covertly communicate with one another.
LINK (via: Neatorama)