For the last 15 years my research has been on the population biology and fisheries ecology of lobsters and crabs (decapod crustaceans). Lobsters are the most valuable commercial species in the Maritimes and there is still much to learn about lobster population dynamics and response to fishing and environmental change. Publications since 2000 (listed below) have focussed on (i) the development of indicators of abundance for different life history stages of lobsters and (ii) factors affecting the catchability of lobsters in traps. My research has involved diving and video studies to measure animal density and establish habitat linkages, trapping studies to measure catchability, and mark-recapture studies to measure growth and movement. Prior to 1994 I researched the ecology of planktonic organisms, particularly the larval stages of sea scallops.