A group of elephant seals sleep in the sun around a sand dune on Active Point, San Miguel Island, of the Channel Islands National Marine Sanctuary, off the coast of California. Image credit: Robert Schwemmer, NOAA National Marine Sanctuaries
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Lake Huron's Thunder Bay National Marine Sanctuary expands in size to more than 3,800 square miles.
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Revised: 2014-01-16 | You are here: http://oceanservice.noaa.gov