2.2 Location data processing
Location and dive were obtained through the Argos Data Collection and Location System using the Kalman filter which greatly improves the location data (Lopez et al. 2014). Dive data were decoded in Wildlife Computers portal. All statistical analyses were performed using R software version 4.0.0. We restricted our dataset to positions associated with a travel speed lower than 7 km.h-1(Wahlberg 2002). Locations on land were also discarded. Any individuals containing less than 10 locations (over both seasons together) were also discarded from the analysis. In order to assess seasonal patterns and monsoon periods of the Indian Ocean, seasons were discriminated as follows: dry season from April to November and wet season from December to March.