Video Supplement

Files in this Data Supplement:

• Video - Boundary layers and fluid motions around a Cyanea capillata ephyra (3.0 mm diameter) during swimming. Swimming is first shown at real velocity and a second time in slow motion. The ephyra initially approaches a layer of dye and entrains dye-containing fluid around the lappet margins during bell contraction. During subsequent bell relaxation, the dye is transported to the subumbrellar surface and manubrium. Note that no dye passes between the lappets. Note also that even after passing through the dye filament, dye is retained in the boundary layers between lappet clefts.