Records of native mammal species (southern elephant seal, southern sea lion and South America fur seal) breeding on each island are extracted from the database (known as the Falkland Islands Biodiversity Database) for all islands in the Falkland Islands (with the exception of islands in freshwater bodies). Each record entered according to date of survey. Sea lion population data are from censuses conducted in 1995 and 2003.All records relating to sea mammals have been entered in association with the date of survey visit, surveyor's name and affiliation. A desktop assessment, for example using Google Earth or aerial photographic images, is also considered to be a 'visit'. Disclaimer: islands with limited and variable data may have large and imprecise estimates or records. A number of islands have not been surveyed so the dataset is not complete. Consider the wide range and variability of survey methodology and coverage are limitations to the dataset, hence it should be used with caution.