Zombie Amphipods (image) Virginia Institute of Marine Science Share Print E-Mail Caption When the salt-marsh amphipod Orchestia grillus is infected by the parasite Levinseniella byrdi, it develops an orange exoskeleton and neglects to hide from predators. Uninfected amphipods are brown and scurry for cover when birds arrive. Credit Copyright D. Johnson/VIMS. Usage Restrictions One-time use only. 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.