Ducibella camanchacais (IMAGE) Woods Hole Oceanographic Institution Caption Ducibella camanchacais a fast-swimming predator researchers named after "darkness." At nearly 4 centimeters in length, this crustacean uses specialized raptorial appendages to capture and preyupon smaller amphipod species.The newly discovered crustacean is the first large, active predatory amphipod from the extreme depths of Atacama Trench. Credit Johanna Weston, ©Woods Hole Oceanographic Institution Usage Restrictions none License Original 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.