Seattle
A trip to University of Washington to learn how to pilot underwater gliders provided an opportunity for photos for both work and leisure.
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Seaglider underwater
Underwater view of a seaglider as it floats in the test tank. Taken with my Canon 5D and EF24-105 mm f/4L IS at 58 mm. Exposure was 1/60 sec at f/4.5, ISO 1600, EV -1.