Summary of data collected for 23 of 25 naïve grey seal pups instrumented with SPLASH 10-AF satellite-linked transmitters (www.wildlifecomputers.com) on Sable Island during the 2016 breeding season.

Tags deployed on two pups failed to transmit. Data includes sex (male = 1 and female = 2), body mass and length at weaning, post-weaning duration between weaning date and first day at sea, the total number of days of tracking between the date the tag was attached and the last day of transmitted data, number of Fastloc and Argos locations recorded, and number of complete trips. For two pups not weighed on the weaning date, body mass at weaning was estimated using a daily mass loss of 0.5 kg d-1 [33].