Elephant Seal Sightings, Macquarie I…

Occurrence dataset published by Australian Antarctic Data Centre

  • 120,000

View occurrences


Full Title

Elephant Seal Sightings, Macquarie Island


At Macquarie Island 1000 seals were weighed per annum between 1993-2003 at birth and individually marked with two plastic flipper tags in the inter-digital webbing of their hind flippers. These tagged seals were weighed again at weaning, when length, girth, fat depth, and flipper measurements were made. Three weeks after weaning 2000 seals were permanently and individually marked by hot-iron branding. Recaptures and re-weigings of these known aged individuals were used to calculate growth and age-specific survival of the seals. Similar data were collected from elephant seals between 1950 and 1965 when seals were individually marked by hot-iron branding. Mark-recapture data from these cohorts were used to assess the demography of the declining population. Length and mass data were also collected for these cohorts and were used, for the first time, to assess the growth of individual seals without killing them.

Language of Metadata



Published by

Australian Antarctic Data Centre

Registration Date

Apr 3, 2007

Served by

DiGIR Installation


External Data

Metadata Documents

120,000 Georeferenced data

Other Contacts

Technical contact
Dr Dave Watts
+61 (3) 62 323 586
Administrative contact
Mr Harry Burton
+61 (3) 62 323 339