• A 1980 survey of McDonald Island found lower diversity than that on Heard Island; four mosses and a number of algal species are recorded from there.
  • American sailor John HEARD discovered Heard Island in 1853 while fellow American William MCDONALD discovered the McDonald Islands the following year.
  • The Heard and McDonald Islands experience an ‘Antarctic climate’, that is highly influenced by its position in the Southern Ocean.
  • The McDonald Islands are small in comparison to Heard Island with the main feature of the group being only 2.45 square kilometres and rising a mere 230 metres.
  • Heard Island and McDonald Islands are located in the Southern Ocean, approximately 1,700 km from the Antarctic continent and 4,100 km south-west of Perth.
  • HIMI stands for Heard Island and McDonald Island and is 4,000 kilometers southwest of Australia.
  • etymology: named after American Captain John HEARD, who sighted the island on 25 November 1853, and American Captain William McDONALD...
  • Volcanic in origin, Heard Island is 27 miles (43 km) long, 13 miles (21 km) wide, and rises to 9,005.
  • The small McDonald Islands are 27 miles west of Heard Island and are part of a mostly submerged volcanic peak.
  • On McDonald Island, a volcano erupted in December 1996, after having lain dormant for the previous 35,000 years.