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The Steinhart Aquarium is part of the California Academy of Sciences in San Francisco. In this photo, one of the Aquarium’s workers was meticulously cleaning the inside of the aquarium’s glass. It’s fun to just sit and watch her work as the fish swim by in complete comfort.
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The photo was taken with a Canon EOS 40D, EF17-40mm f/4L lens, 1/125 sec at f/4, ISO 500 on SanDisk Extreme IV Digital Film.