Figure 2. The Southern Indian Ocean database.

(a) Spatial distribution of seal profiles available in the Southern Indian Ocean and their distribution by (b) dive depth, (c) year, (d) month and (e) geographical zone. The position of deployment sites (green stars) and the definition of geographical zones (selected contours of mean dynamic topography⁴⁶ in yellow) are indicated on the spatial distribution map. Australian data (red) were collected through the Integrated Marine Observing System (IMOS), while French data (blue) were obtained in the framework of the observatory MEMO (Mammifères Echantillonneurs du Milieu Marin).