The island is part of Fiordland National Park and is an important conservation site.[4] It was declared pest-free in 2005 and is one of only nine islands in the area that is completely free of introduced mammalian pests.[1][5] Since 2005, endangered endemic birds such as the Haast kiwi (totoaka) and the Yellowhead (mohua) have been released on the island.[4][6]
^ ab"Coal Island Trust". South West New Zealand Endangered Species Charitable Trust. Retrieved 13 October 2017.
^"FCT Newsletter 'Jigsaw'"(PDF). Fiordland Conservation Trust. August 2012. Archived from the original(PDF) on 7 February 2018. Retrieved 16 October 2017.