The map to the left shows the known distribution of veined rapa whelks in the Chesapeake Bay, USA as of August 31, 2009. The bulk (99%) of the more than 18,000 individual whelks collected since September 1998 are from the yellow area. A single rapa whelk was collected near Tangier Light early in 2005 (Harding and Mann 2005) making Tangier Light the northernmost collection point for whelks in Chesapeake Bay.