News from the fascinating world of sound and frequency.
… But Other Sound Mysteries Remain
What was that? For decades, mysterious sounds have been recorded from the ocean that have absolutely stumped scientists.
While some remain a mystery, this week, researchers determined that an odd noise known as the “bio-duck” was emitted by an Antarctic minke whale.
Denise Risch of Integrated Statistics and her colleagues explain in the journal Biology Letters that the Donald Duck-type sound is produced by Antarctic minke whales, which they tagged and recorded at Wilhelmina Bay, off the western Antarctic Peninsula.
“For decades, the bio-duck sound has been recorded in the Southern Ocean, but the animal producing it has remained a mystery,” said Risch.
The bio-duck sound is often picked up by hydrophones positioned under the ice of Antarctica.
Mysterious sounds in the ocean
Upsweep is an unidentified sound detected on the American National Oceanic and Atmospheric…
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