In the Salish Sea, beds of the only canopy forming kelp, Nereocystis luetkeana, vary in their density and distribution; the reasons behind this variation are still being explored and may vary by geographic location. Kelp forests provide important three-dimensional habitat to a wide array of species, but key organisms of interest that may influence kelp distribution and abundance are herbivorous grazers, such as the Northern Kelp crab, Pugettia producta. P. producta’s feeding preferences, although observed with other macroalga species in a laboratory setting, are not well understood, as is their potential effect on N. luetkeana populations in the field. In other geographical locations of P. producta’s range, they have been observed to consume a variety of different macroalga’s. In the Salish Sea, it is not known if P. producta living in this region prefer the same macroalgae as others of the same genus and species. I conducted laboratory feeding trials to determine if a feeding relationship was present between the crabs and locally abundant macroalgae using a block design with the crabs as blocks. I ran three separate feeding experiments: vegetative N. luetkeana vs reproductive N. luetkeana (sori), Egregia menziesii vs Sargassum muticum, and E. menziesii vs vegetative N. luetkeana. P. producta consumed 3x more N. luetkeana sori then vegetative blade and did not show a significant preference for any other food source offered. A better understanding of P. producta’s feeding preferences will inform future conservation and restoration plans to help keep N. luetkeana beds flourishing for years to come.