Figure 5. Capillary breakup extensional rheology (CaBER) measurements mimicking the extensional flow experienced by hagfish slime during suction predation.

(a) A liquid filament thinning event of hagfish mucin (natural concentration) at t: 0, 80, 670, 680 ms. (b) The normalized filament diameter of hagfish mucin at a natural concentration, 50%, and 25% of the natural concentration as a function of time. Glycerol is provided as a Newtonian standard. (c) Extensional viscosity of hagfish mucin as a function of Hencky strain based on the data provided in (b). The orange dashed line indicates a Newtonian profile as observed for glycerol. An exemplary filament thinning event of natural hagfish mucin is provided in the Supplementary Video 5.