A team of researchers pilot the marginal ice zone near the island of Svalbard (80 degrees north) during the depths of winter.  Here, the ice cover has thinned dramatically due to climate change, opening up waterways that were once frozen.  The loss of sea ice means that waters that were once shrouded for 4 to 6 months of the year are now exposed to light sources for the first time in human history.  The team has mounted an expedition to understand how these trace amounts of light may be radically altering the arctic marine ecosystem.