Southern sea otters (Enhydra lutris nereis) are a threatened species, and their recovery is in part dependent on their use of estuaries. A greater understanding of the relationship among sea otters, their prey species, and habitat types can provide insight into both top-down and bottom-up factors affecting sea otters in estuarine ecosystems. Morro Bay, CA has seen a significant increase in the population of southern sea otters over the last decade. The goal of this project is to investigate the temporal and spatial patterns of sea otter foraging behavior and diet throughout the Morro Bay estuary. To do this, we will analyze six years of ongoing sea otter foraging behavior and diet data collected in Morro Bay, which includes information on foraging location, taxa of prey, number and size of prey, handling time, dive time, tool use, and environmental conditions. We will compare these data with annual habitat mapping of Morro Bay to investigate how behavior and diet vary spatially and across different habitats (e.g., eelgrass, sandy bottom) within the estuary. Understanding how sea otters utilize different habitats within an estuary, particularly during the ongoing recovery of their population, will provide critical data that can aid in species recovery range-wide.