Dr. David McKee leads the Marine Optics and Remote Sensing Group at the Physics Department, University of Strathclyde and holds an adjunct position with the Arctic and Marine Biology Department at UiT The Arctic University of Norway. His research is focused on the development and use of optical technology and radiative transfer modelling to better understand marine ecosystems. Here he will present recent results illustrating the impact of zooplankton swarms on ocean colour remote sensing signals, discuss prospects for using this technology to monitor zooplankton populations and present key challenges still to be addressed.