To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 Time-lapse movie shows the development of Ciona embryo within chorion.Movie duration is for 2.72 h, and is shown at 100 frames per second. Shown as stills in Fig. 1A. Scale bar = 50 μm. Ciona embryonic tail bending is driven by asymmetrical notochord contractility and coordinated by epithelial proliferation Qiongxuan Lu, Yuan Gao, Yuanyuan Fu, Hongzhe Peng, Wenjie Shi, Bo Li, Zhiyi Lv, Xi-Qiao Feng, and Bo Dong Development 2020. 147:None-None; doi: 10.1242/dev.185868 Download Original Video