Shell's seismic vessel MV Gilavar conducts air gun seismic tests in the Chukchi Sea in September 2009. The company plans to drill exploratory wells in the Chukchi and Beaufort seas this summer on the basis of seismic work done in 2007-2009. Scientists have been studying the impact of the intense underwater sounds on marine mammals and other animals.
Shell's seismic vessel MV Gilavar conducts air gun seismic tests in the Chukchi Sea in September 2009. The company plans to drill exploratory wells in the Chukchi and Beaufort seas this summer on the basis of seismic work done in 2007-2009. Scientists have been studying the impact of the intense underwater sounds on marine mammals and other animals. HANDOUT Shell Alaska
Shell's seismic vessel MV Gilavar conducts air gun seismic tests in the Chukchi Sea in September 2009. The company plans to drill exploratory wells in the Chukchi and Beaufort seas this summer on the basis of seismic work done in 2007-2009. Scientists have been studying the impact of the intense underwater sounds on marine mammals and other animals. HANDOUT Shell Alaska

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