Our understanding of the way in which animals know how, when, and where to orient and navigate around their environment has grown considerably over the last decade. Movement can vary from displacement in the immediate environment to the long-distance migration of salmon or swallows. How animals find their way around is both immensely variable and controversial - what cues they use and how their senses are involved, how much they remember, to what extent they rely on instinctive information or learning. Behaviour, ecology, and neurophysiology are all implicated and have been investigated in a wide range of organisms by researchers all over the world. Individual authors, all eminent specialists within their fields, have been asked to present reviews of the material in which they are most familiar and to speculate about future directions in the field.