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Collecting otoliths from sockeye salmon on the Salmon Lake shoreline

By Alaska Science Center August 2015 (approx.)
Scientist cutting open head of dead sockeye salmon to get otolith (ear bone) for analysis
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Detailed Description

Chris Zimmerman removing otoliths from sockeye salmon carcasses on the shoreline of Salmon Lake.  Otoliths are used to read age of a fish and other chemical signatures over time.

Sources/Usage

Public Domain.