Fishing fleets, like lobster boats in New England, are beginning to find their catch is migrating in a warming climate.

PORTLAND, ME – JULY 21: A fishing boat leaves the dock on July 21, 2012 in Portland, Maine. A mild winter and warmer than usual spring caused lobsters to shed their shells six weeks earlier than usual which resulted in an overabundance of lobsters in the Northeastern United States that has driven down prices to record lows. Lobstermen hope to make at least $4.00 a pound to turn a profit but prices this year have been as low as $1.25 a pound. (Photo by Justin Sullivan/Getty Images)