Building up of Sponge Skeleton (VIDEO) Cell Press This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Video shows the dynamic spicule-by-spicule building up of a sponge skeleton. This is a Z-projected movie taken from the side of a sponge (Ephydatia fluviatilis) hatching from a gemmule. Credit Nakayama et al./<em>Current Biology</em> 2015 Usage Restrictions Credit Required. 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.