Water Sampling (IMAGE) Bigelow Laboratory for Ocean Sciences Caption Scientists collect water samples from the dark ocean -- the deep, unlit waters that comprise 90 percent of the ocean. In a new Science paper, Bigelow Laboratory researchers shared their discovery that nitrite-oxidizing bacteria play a major role in the capture of carbon dioxide in this realm. Credit University of Vienna Usage Restrictions None 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.