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You can access the Ocean Explorer Tracking Narwhals in Greenland 2006-2007 Podcast feed here: 
Listen to a NOAA podcast on the Tracking Narwhals in Greenland expedition, where scientists struggle with sharks, icebergs and the bitter cold as they attempt to make narwhals oceanographers.
Related Links
Tracking Narwhals in Greenland: Tracking Narwhals
