His research revolves around studying animal responses to challenges from their environments and human activity to understand how they deal with these different stressors. Most of the work is on marine animals, including sharks, rays, penguins, and turtles, but he has also studied frogs, crocodiles, lizards, and small marsupials. The purpose of his research is to apply improved knowledge to the conservation and management of affected species and ecosystems. His research group is Monash University-based, Melbourne, Australia, but they work in many different places.