Rottnest Island

Rottnest Island Western Australia
Rottnest Island from space
Population	114 (2011 census; up to 15,000 visitors at peak holiday periods)
• Density	6.00/km2 (15.5/sq mi)
Established	1830s
Postcode(s)	6161
Elevation	46 m (151 ft)
Area	19 km2 (7.3 sq mi)
Time zone	AWST (UTC+8)
Location	19 km (12 mi) W of Fremantle
LGA(s)	A-class reserve administered by the Rottnest Island Authority
State electorate(s)	Fremantle
Federal Division(s)	Fremantle
Mean max temp Mean min temp Annual rainfall 21.5 °C 71 °F 14.9 °C 59 °F 702.3 mm 27.6 in

Coordinates: 32°00′07″S 115°31′01″E / 32.002°S 115.517°E / -32.002; 115.517

Rottnest Island (known as Wadjemup to the local Noongar people, and otherwise colloquially known as Rotto) is an island off the coast of Western Australia, located 18 kilometres (11 mi) west of Fremantle. A sandy, low-lying island formed on a base of limestone, Rottnest is an A-class reserve, the highest level of protection afforded to public land. The island covers 19 square kilometres (7.3 sq mi) and is administered by the Rottnest Island Authority under a separate act of parliament. Rottnest is a popular holiday destination, and there are daily ferry services to Perth, the state's capital and largest city. It has a permanent population of around 100 people, with around 500,000 annual visitors (and up to 15,000 visitors during periods).

Rottnest is perhaps best known for its population of quokkas, a small native marsupial found in very few other locations. The island also includes colonies of Australian sea lions and . A number of native and introduced bird species nest near the shallow salt lakes in the island's interior, and Rottnest has consequently been designated an Important Bird Area. The island also includes three endemic tree species, notably the Rottnest Island pine, and was heavily forested before settlement.