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　　"My colleagues and I always joke that one of theJacques Cousteau movies starts out with somethinglike the ocean is a silent place.

　　“And, you know, it's anything but silent.”

　　Kate Stafford is a biologist and oceanographer at theUniversity of Washington.

　　And she and her colleagues have been cataloguing that soundscape of the deep—like thesebowhead whales and bearded seals.

　　They're using an array of underwater microphones near the Bering Strait, a natural chokepoint for underwater traffic headed from the Pacific to the Arctic and back.

　　And in some ways, she says, listening is a better way to census the Arctic than seeing.

　　"You can record sounds underwater at night, when the region is ice coverd.

　　So we're able to eavesdrop all year round.

　　And you can hear animals much further underwater than you could, say, see them from thesurface of the water."

　　But in the last five years of underwater recordings, Stafford says, no two years have been thesame in terms of which species they hear, and when they hear them.

　　And as arctic ice retreats, species like humpbacks and killer whales are staying north longer—aslate as early November—which she says would not have been possible just a few decades ago.

　　They even found humpbacks singing mating songs up in Arctic waters which they used to thinkhappened only down in tropical breeding grounds.

　　The team presented these findings November 2 at a meeting of the Acoustical Society ofAmerica, in Jacksonville, Florida.

　　"If polar bears and walrus might be the ecological losers as it were in terms of sea ice loss, alot of the larger whales seem to be taking advantage of this system.

　　It's a really good time to be a bowhead, as a colleague of mine says."

　　But uncertainty is the name of the game with Arctic change.

　　We'll see if it continues to be a good time to be a bowhead as more and more sub-Arctic whalesmove north to compete in Arctic waters.