territorial sea: 12 nm exclusive fishing zone: 200 nm
Climate:
antarctic
Terrain:
Heard Island - 80% ice-covered, bleak and mountainous, dominated by a large massif (Big Ben) and an active volcano (Mawson Peak); McDonald Islands - small and rocky
Elevation extremes:
lowest point: Indian Ocean 0 m highest point: Mawson Peak, on Big Ben 2,745 m
Natural resources:
fish
Land use: