Hydrothermal Vent (IMAGE) Max-Planck-Gesellschaft Caption Chimney-like structures spew hot fluids of up to 300 degrees Celsius that contain large amounts of methane and hydrogen sulfide. Credit MARUM Usage Restrictions This image may only be used or reproduced for editorial purposes and in connection with scientific articles on our press material, in which case such usage or reproduction is free of charge and requires no permission. Any other use, in particular for commercial purposes, requires prior permission of the author or photographer. 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.