... for the duration of the long contractile phase of the swim (∼250 ms). This would explain why the non-contracting half of the bell can start to contract so long after the start of the swim, once the inhibition has declined. In some other hydromedusae, such as Polyorchis , turning stems largely from an asymmetrical...

...Doug Lipinski; Kamran Mohseni SUMMARY The flow structures produced by the hydromedusae Sarsia tubulosa and Aequorea victoria are examined using direct numerical simulation and Lagrangian coherent structures (LCS). Body motion of each hydromedusa is digitized and input to a CFD program. Sarsia...