Since the early 1990s the commercial catch of rock lobster on the West Coast of South Africa has progressively decreased with a concomitant influx of lobsters into an area not previously associated with dense lobster populations, east of Cape Hangklip. It has been hypothesized that the major shift in rock lobsters eastwards could be as a result of large-scale, longshore migrations. This study aimed to investigate the movement patterns of the South African West Coast rock lobster, Jasus lalandii, using a variety of techniques. These were (1) examining long-term data from an...