[Cow-nosed rays](http://en.wikipedia.org/wiki/Cow_nose_rays “Wikipedia: the most common type of ray found in the Chesapeake Bay, a voracious eater.”) arrived early this year and ate 90% of the 775,000 oysters in an artificial reef days after they were planted in the Piankatank River to help revive the Chesapeake Bay’s declining shellfish population. The oysters were planted by the Chesapeake Bay Foundation and The Nature Conservancy on a man-made reef in the Piankatank River.

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