Data on whelk morphometrics from the Bodega Marine Laboratory, University of California, Davis in May-August of 2017.

We conducted laboratory experiments to test whether previous predator exposure had a sustained effect on prey foraging and in turn on a basal resource, even after the predator was removed. We tested for both behavioral and morphological legacies of prior predation. The study system consisted of a tri-trophic food chain, using the red rock crab, Cancer productus, as the predator, the carnivorous whelk, Nucella ostrina, as the prey species, and the California mussel, Mytilus californianus, as the basal resource. This dataset represents morphometrics data of Whelks at the start and end of the experiment from the Bodega Marine Laboratory, University of California, Davis in May-August of 2017.