Fig. 6

Hourly co-occurrence networks of individual dusky (red) and Galapagos (blue) sharks. The width of edges represents the strength of associations between individuals (i.e. the number of co-occurrences) and the size of nodes is scaled to the detection period of each individual (number of days between first and last detection). Communities, based on fast-greedy modularity optimisation, are distinguished by the coloured polygons. Modularity at Cascade and Kingston piers was 0.52 and 0.4, respectively.