My major research interest is the biology of the coral-algal symbiosis and understanding and quantifying how the relationship changes during conditions of altered environmental conditions (natural and anthropogenic). I am involved in developing ways to examine and quantify the condition of corals in both laboratory-based setting (i.e. for determining water quality criteria for reefal ecosystems) and in the field (i.e. examining dredging or construction-related activity, or point/diffuse source pollution). Much of my work now is associated with the examining the effects of sediments from dredging on corals, seagrass and sponges.