Fig. 2

Habitat encountered across the year-long deployment by shark 1 (a–c) and shark 2 (d, e). a, d Most probable track with daily positions coloured by date and corresponding time-integrated utilization distributions from the geolocation model (UDs; grey polygons). Triangles indicate tagging (downward) and pop-up locations (upward). Focal periods (F1–F4) are indicated as boxes. b, e Light regime and thermal structure of the water column encountered by the shark. Time intervals for F1–F4 are highlighted at the bottom. Upper bar marks number of daytime hours. Lower bar denotes stratification strength quantified as the gradient of the thermocline. c, f Temperature profiles recorded by the tag across each focal period F1–F4 (mean ± s.d.). Note that the y-axis was limited to 250 m. Thermocline limits in b, c, e, f mark the upper (10%) and lower (70%) extent of the thermocline