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Researcher Keira Heggie from the Smithsonian Environmental Research Center (SERC) releases a crab back into the water after tagging it with a plastic marker as part of a study in the Nanticoke River, a tributary of the Chesapeake Bay, near Tyaskin, Maryland August 25, 2015. SERC offers a reward to people who find a tagged crab. A $5 reward is offered for some of the crabs and others a $50 reward, the difference helping to determine the accuracy of the data. The researchers assume that most people who catch the $50-labelled crab will phone in the tag number to collect their reward. SERC's research on migration patterns informs the management of the crab fisheries and the setting of fishing limits in the area. This can be a point of contention between crabbers and government regulators who rely on the environmental research. (Photo by Jonathan Ernst/Reuters)
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