Video of Flexible Head Joint (VIDEO) Smithsonian 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 Scientists demonstrate the anatomy of a barbeled dragonfish's jaws as they are fully opened, including the elevation of the head. At the connection between the head and flexible part of the vertebral column, the functional head joint is exposed by the movement and notably enhances the degree of cranial elevation. Credit Nalani Schnell, Muséum national d'Histoire naturelle Usage Restrictions News media use of the video files in relation to the publication in PLOS ONE are permitted. 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.