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Three divers work on an instrument under frozen sea ice.
Date Taken:
October 29, 2014
Photograph By:
Steve Rupp
License Type:
Creative Commons CC BY-NC-ND 4.0.

US Antarctic Program divers Rob Robbins, Brenda Konar and Amanda Kelley collect a calibration sample for a Sea-FET instrument, an autonomous pH oceanographic sensor located at Cape Evans, McMurdo Sound, Antarctica, for a project studying ocean acidification. Research from this project, led by Gretchen Hofmann at the University of California, Santa Barbara, resulted in the first-ever continuous time-series pH data from the Southern Ocean, setting a benchmark for monitoring future changes to the this pristine marine ecosystem. This photo was taken at a depth of about 70-80 feet.

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This photo is covered by a Creative Commons license. Please see the Usage and Submissions page for more information. Use of this photo requires the following:

(1.) The user must give appropriate credit to the photographer and the National Science Foundation (NSF) and provide a link to the Creative Commons license. (2.) Use of the photo must be for non-commercial purposes only. (3.) No derivative works may be made with the original photo without the explicit permission of the photographer.