The open ocean off Utqiagvik in fall and early winter is evidence of climate change. Remarkably, bowhead whales appear to be thriving, although there are new challenges. Kidney-worm infections have been detected in bowheads, possibly brought by other species of whales coming north. And then there are the killer whales, a natural predators of bowheads now venturing north.

Sea ice has shrunk, but scientists are seeing signs that Alaska's bowhead whales are flourishing.

The ice conditions are similar to last year (with) lots of young ice and close leads," said Captain Frederick Brower. "We all went out and broke trail to the edge, but a high west wind came along and added about three-quarters to 1 mile of ice and (we) had to break trail through that and began whaling from the new edge ... . The conditions were not favorable but we made due with what we had and continued on with our whaling season."

6-5-13 Risky ice for whaling - Barrow, Alaska, USA