Multi-droplet Water Entry (IMAGE) Utah State University Caption Researchers at USU's Splash Lab uncovered the physics behind a unique underwater phenomenon that's been likened to the Matryoshka doll -- the traditional Russian doll within a doll. Credit Chris Mabey Usage Restrictions None 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.