Marine Ecology
Ecosystem integrity,
Population biology and management,
Behavioural and foraging ecology, and
Conservation biology.
Research species include the New Zealand sea lion Phocarctos hookeri, New Zealand fur seal Arctocephalus foresti, bottlenose dolphins Tursiops aduncus, Dugongs Dugong dugon, beaked and baleen whales, little blue penguins Eudyptula minor, yellow eyed penguins Megadyptes antipodes, and New Zealand shag species Phalacrocorax spp.