NOAA’s Channel Islands National Marine Sanctuary is a tremendously popular destination for recreational boaters, like this sailboat off the southern end of Santa Cruz Island. Credit: Robert Schwemmer/NOAA.
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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