A large excavator shovel scoops up huge limestone boulders to dump into the Gulf of Mexico to help rebuild an oyster reef off the Texas coast on Tuesday, Oct. 29, 2013. The $5.4 million project will ... more 
A large excavator shovel scoops up huge limestone boulders to dump into the Gulf of Mexico to help rebuild an oyster reef off the Texas coast on Tuesday, Oct. 29, 2013. The $5.4 million project will rebuild some 57 acres of reef, helping to revitalize the fragile Gulf marine ecosystem. (AP Photo/Pat Sullivan) less 
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Associated Press | Photo By Pat Sullivan
Fri, Nov 1, 2013 2:42 AM EDT