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Images: The Secret Lives of Fish

Simon Thorrold examines a magnified otolith (ear bone) of a weakfish. Dark and light lines are alternating layers of calcium carbonate and protein, secreted as layers that can be detected as annual, or even daily, rings. (Photo by Tom Kleindinst, WHOI)
The weakfish, Cynoscion regalis
Alternating light and dark bands of calcium carbonate and protein are visible in this enlarged picture of a weakfish otolith, taken through a light microscope. (Photo by Simon Thorrold, WHOI)
(Simon Thorrold, WHOI.)
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