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Hydrophone on mooring listening to Bowhead whale.

Hydrophone on mooring listening to Bowhead whale.
Hydrophone on mooring listening to Bowhead whale.
Hydrophone on mooring listening to Bowhead whale.
Hydrophone on mooring listening to Bowhead whale.
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197407
Cook, John E.
Hydrophone on mooring listening to Bowhead whale.
Illustration
12/29/2011
Esch_IceMooring-01.jpg
Caption from Oceanus magazine, Vol. 49, No. 1 page 8:
It is impossible to keep track of whales visually throughout the year in seasonally ice-covered polar regions. So scientists eavesdrop on bowhead whale calls using moorings with hydrophones that record their singing. Bowhead whales sing to attract mates, but their song changes throughout the season and is never identical from year to year. Scientists are studying how changes are introduced to the song and how the whales adopt these changes and end up singing the same tune.
Horizontal version is also within this folder.
Illustration by Jack Cook and Amy Caracappa-Qubeck
© Woods Hole Oceanographic Institution
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