Monte Conca Spring Pool (image) University of South Florida (USF Innovation) Share Print E-Mail Caption Monte Conca spring pool during the dry season. The white film on top is sulfur-oxidizing bacteria growing. Credit University of South Florida Usage Restrictions None Share Print E-Mail 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.