Professor Bennett's current research is in comparative vertebrate morphology, and fish biology. The biomechanical and functional morphological studies currently include studies of marsupial locomotion and the functional morphology of bird claws, particularly in relation to foraging behaviour and early bird evolution.

Professor Bennett is involved in a number of collaborative projects investigating the mechanics of marsupial locomotion, and vertebrate soft connective tissue and mineralised tissue biomechanics. Research involving fishes focus on the biology of sharks and rays of Moreton Bay and the southern Great Barrier Reef, including, but not limited to whaler sharks, wobbegong and carpet sharks, grey nurse sharks, rays (manta, mobula, eagle- and stingrays). Our research spans population biology, feeding ecology, stress physiology, reproduction, parasitology, genetics, fisheries, growth and aging, and mechanics. Our laboratory has collaborative links with researchers from Australia, New Zealand, Denmark, Southern Africa, USA, France, UK and Indonesia.