Fig. 2From: Activity seascapes highlight central place foraging strategies in marine predators that never stop swimmingDiel and tidal changes in the probability of blacktip reef (a) and grey reef sharks (b) being in a relatively high activity state (state 2). Probabilities were calculated by applying a hidden Markov model to acceleration data. The solid grey lines represent 95% confidence intervals for one tidal state (high tide). For clarity, other tidal confidence intervals have not been includedBack to article page