Abstract
Our experiment investigates the functional response of 12 individually housed Octopus vulgaris to the presentation of 3 different densities of crab. The results of this experiment indicate that O. vulgaris is one of few species which does not exhibit a functional response to prey density, and will consume roughly the same amount of food regardless of the amount presented. These results are in opposition to the results of many previous experiments investigating the functional responses of other species, and a few possible explanations for the unexpected results are presented.