<i>Siphonophore Rhizophysa</i> (IMAGE) Woods Hole Oceanographic Institution Caption Three views of one twilight zone animal-- the predatory Siphonophore Rhizophysa--look like a magical dancing sprite in the night sea. A relative of the Man-o-War, it's four inches high when contracted (middle) but its stinging tentacles stretch to a couple of feet when fishing. Credit Larry Madin, © Woods Hole Oceanographic Institution Usage Restrictions with proper credit 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.