US approves expansion of Great Lakes sanctuary in Shipwreck Alley

September 5, 2014 7:51 PM

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DETROIT (AP) - The Thunder Bay National Marine Sanctuary in northern Michigan has received federal approval to expand its size nearly tenfold and boost the preservation of scores of sunken vessels in an area of Lake Huron once known as “Shipwreck Alley.”

Thunder Bay, the only freshwater national sanctuary, is announcing Friday that the Obama administration approved the years-in-the-making effort to grow from about 450 square miles to 4,300 square miles. The expansion - which incorporates the waters from off Alcona, Alpena and Presque Isle in the nor...

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