Mary-Anne researches how the environment and climate change affect the behaviour, distribution, life history and conservation of marine and polar vertebrates. She studies the behavioural ecology of many species of seals and seabirds in temperate, Southern Ocean and Alaskan waters and has participated in over 25 expeditions and voyages. Her research focuses on the way in which marine predators, especially migratory animals, interact with their environment at different temporal and spatial scales, and the fine-scale relationships between animal behaviour and prey dynamics.