Fig 2 (VIDEO) University of Bristol This video is under embargo. Please login to access this video. Caption Juvenile male dolphins engaging in joint action while playing together in subgroups Credit Shark Bay Dolphin Research Usage Restrictions once with release 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.