A great blue heron shoots the gap between two stands of phragmites along the shore of the upper Choptank River. Digital image, 2013

A great blue heron shoots the gap between two stands of phragmites along the shore of the upper Choptank River. Digital image, 2013

With the Chesapeake Bay Bridge-Tunnel in the background, crab dredgers work through a squall in the lower Bay. The dredgers used powerful steel rakes to capture wintering female crabs, most of them carrying eggs. The day this photo was taken, one boa

With the Chesapeake Bay Bridge-Tunnel in the background, crab dredgers work through a squall in the lower Bay. The dredgers used powerful steel rakes to capture wintering female crabs, most of them carrying eggs. The day this photo was taken, one boat sank and three people drowned. The dredge fishery was halted in Virginia in 2008. Kodachrome original, 1991

After checking out the photographer, who was face down in the marsh nearby, an osprey lands on its nest, bringing dinner to its young. This wide Smith Island scene was made with a remote camera. Kodachrome original, 1991

After checking out the photographer, who was face down in the marsh nearby, an osprey lands on its nest, bringing dinner to its young. This wide Smith Island scene was made with a remote camera. Kodachrome original, 1991

Icicles hang from the chains of the skipjack Rebecca T. Ruark as she pulls oyster dredges under sail in the lower Choptank River. Kodachrome original, 1988

Icicles hang from the chains of the skipjack Rebecca T. Ruark as she pulls oyster dredges under sail in the lower Choptank River. Kodachrome original, 1988

Terry Warrick struggles to douse the jib of the skipjack Rebecca T. Ruark when an early morning squall roars through the lower Choptank River. Kodachrome original, 1989

Terry Warrick struggles to douse the jib of the skipjack Rebecca T. Ruark when an early morning squall roars through the lower Choptank River. Kodachrome original, 1989