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Images: The Latest Fashion in Bowhead Whale Songs

Because the Arctic and subarctic regions are seasonally ice-covered, it is impossible  to keep track of whales visually throughout the year. So scientists eavesdrop on bowhead whale calls using moorings with hydrophones that record their singing. (Illustration by Amy Caracappa-Qubeck, Woods Hole Oceanographic Institution)
A bowhead whales surfaces and blows in the Bering Sea. Studying their song is a way to learn where their still unknown breeding grounds are so that these critical areas can be protected. (Photo by Carter Esch, Woods Hole Oceanographic Institution)
Underwater hydrophones in the Bering Sea record not only whale songs but a cacophony of sounds, including "knocks" from walruses. Listen to audio below. (Photo by Carter Esch, Woods Hole Oceanographic Institution)
MIT/WHOI Joint Program student Carter Esch (center) helps troubleshoot equipment in the Bering Sea. (Photo by Amy Kennedy, National Marine Mammal Laboratory)
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