Fluid Under Ledges Ecosystem -- Riftia (IMAGE) Schmidt Ocean Institute Caption Hydrothermal vent fluid collects under the ledges and provides the chemical energy driving the entire ecosystem of microbes, scale worms, and riftia (tube worms). Credit Schmidt Ocean Institute Usage Restrictions educational and informational purposes 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.