Macquarie Island (or Macca) lies in the southwest corner of the Pacific Ocean, about half-way between New Zealand and Antarctica, at 54°30S, 158°57E. Politically, it is part of Tasmania, Australia since 1900 and became a Tasmanian State Reserve in 1978, in 1997 a World Heritage Site. It was a part of Esperance Municipality until 1993, when the municipality was merged with other municipalities to Huon Valley. The island is home to the entire Royal Penguin population on earth during their annual nesting season. Ecologically, it is part of the Antipodes Subantarctic Islands tundra ecoregion.