Diego Fernandez and Thure Cerling (IMAGE)

University of Utah

Diego Fernandez and Thure Cerling

Caption

University of Utah geochemists Diego Fernandez and Thure Cerling stand behind a laser machine that blasts tiny samples off 'fish ear bones' as part of a new method of tracking salmon caught at sea to learn where they hatched and spent time. The tube in front of Cerling carries debris from the laser blasts to a mass spectrometer in another room. That device analyzes strontium-isotope ratios in the fish ear stones to reveal the life histories of the salmon.

Credit

Lee J. Siegel, University of Utah

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