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Fig. 3 | Animal Biotelemetry

Fig. 3

From: A week in the life of a pygmy blue whale: migratory dive depth overlaps with large vessel drafts

Fig. 3

The dive profile of the tagged pygmy blue whale for (top) the entire week of the deployment, (middle) the first 18 h after deployment and (bottom) 6 h after the whale commenced its northward movement. Letters above the middle panel mark when the whale initially performed feeding behavior at depths below 300 m (a), when it switched to a series of exploratory dives (b) and then shallow feeding behavior (c). After this time, the whale began to migrate (d) and continued this behavior for the majority of the remaining 6 days (151.5 h) of the deployment, as well as some additional exploratory dives. The mean bottom depth of migratory dives was often just below the predicted depth threshold (12 m, red line in bottom panel) that the whale should swim below in order to avoid wave drag

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