Crown of thorns starfish (COTS) are recognised as a key threat to coral habitats of the Great Barrier Reef. While our understanding of the factors driving outbreaks and their progression continues to grow, our ability to understand COTS impacts at local reef scales is hindered by a lack of information on the specifics of their feeding patterns. Here we combine focal studies of individual starfish over multiple days with high resolution large area 3D imaging to assess how individuals move through the 3D landscape of a reef, and what patterns of prey electivity they demonstrate. Results suggest that a multitude of factors may be driving variation in the foraging range and electivity patterns observed including COTS size, landscape structure and benthic assemblage composition. This study demonstrates a novel application of large area underwater photogrammetry and provides valuable information on the factors driving local-scale patterns of impact by COTS.