Bill Boyd, a senior engineer at Scripps Institution of Oceanography, drives a coring tube into the sand as WHOI microbial ecologist Rebecca Gast steadies the tube and WHOI research associate Levi Gorrell looks on. Each tube collected a core of sand about 100 centimeters long. Gast analyzed samples from different depths within each tube for the presence of bacterial DNA. (Photo by Steve Elgar, Woods Hole Oceanographic Institution)[back]
|
