Copepod and Green Algae (IMAGE) University of Nebraska-Lincoln Caption A millimeter-sized crustacean known as a copepod excretes partially digested paramecia and green algae living inside those paramecia. A new study shows that this partial digestion exposes the otherwise-protected algae to chloroviruses, allowing the viruses to replicate and bloom in their freshwater habitats. Credit John DeLong/Biological Sciences/University of Nebraska-Lincoln 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.