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Movement

The detailed paths of a male and female model crab over their entire lifetime show that they move in a quasi-continuous manner (Fig. B11). As a result of the dependence of movement rate on temperature, the median and range of velocities of crab movement increased during summer, peaking in July at a median of $ \approx 15$ m/hr - within the range reported in Appendix A.5.4. Crabs also responded quickly to changes in the location of low DO (Fig. B12) resulting in high crab densities on the edges of hypoxic regions and almost no crab biomass in low DO areas.