Data concerning the hydrodynamic advantages of arching sea stars modeled in a hydraulics flume.

Arched and flat model sea stars were used in a recirculating flow hydraulics flume to assess flow velocities. Methods employed were: using a fluorometer to detect injected rhodamine dye, acoustic Doppler velocimeter to detect mean and shear velocities to a depth of 35mm above the substrate, DPIV using glass microspheres to detect velocities closer to the substrate.