Telemetry data obtained from Fastloc GPS/GSM tracking of 10 harbour seals (Phoca vitulina) captured from Kenmare Bay and 16 grey seals (Halichoerus grypus) captured from the Blasket islands (Republic of Ireland), from 2006 to 2014

Tracking data of 10 harbour seals and 16 grey seals were obtained from the deployment of Fastloc GPS/GSM tags developed by the Sea Mammal Research Unit (UK). Full tag description is available at: http://www.smru.st-andrews.ac.uk/Instrumentation/GPSPhoneTag/. The tags include a wet-dry sensor from which haulout events are recorded, a pressure sensor providing detailed dive data, as well as a Fastloc GPS recording irregular locations when the seal is not underwater. Data is stored onboard and transmitted via the GSM network when the seal is in the reception range. The data provided here are the individual GPS locations, dive parameters and haulouts of the seals fitted with these tags