Photomicrograph Mosaic (IMAGE) Woods Hole Oceanographic Institution Caption Detailed examination of rocks nestled thousands of feet beneath the ocean floor revealed life in plutonic rocks of the lower oceanic crust. Shown here is a thin section photomicrograph mosaic of one of the samples. Credit (Photo by Frieder Klein, Woods Hole Oceanographic Institution) Usage Restrictions with proper credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.