Lady Julia Percy Island, known as Deen Maar or Dhinmar in the Gunditjmara language, lies off the coast, in the Barwon South West region of Victoria, Australia in Bass Strait. The island is an unincorporated area under the direct administration of the government of Victoria. Description It is south-south-west of Yambuk, and south-west of Port Fairy. The island is about in length by in width, with an area of , comprising a plateau, varying in height from asl, surrounded by cliffs, rock platforms and reefs. It contains an important seal breeding colony. It has a long history of human exploitation, which has drastically affected its vegetation communities, though it is now protected as a State Faunal Reserve. It is listed on Australia's Register of the National Estate. It is best viewed from The Crags or Yambuk Lake, both of which are in the Yambuk area. History Deen Maar was well known to the Gunditjmara people; it is believed that the spirits of the dead were conveyed across the sea to the island from a cave called Tarnwirring ("the flowing of the wind") at the top of a rocky sea cliff. The island was also known as Tirngoona, meaning "where the sun go away longa night". The island was given the name "Lady Julia’s Island" in 1800 by Lt James Grant after either the wife or daughter of Hugh Percy, 2nd Duke of Northumberland. In 1802 Matthew Flinders expanded the name to Lady Julia Percy's Island as he sailed past on his ship the . Also in 1802, Nicolas Baudin sailed past the island in his ship the Géographe, and recorded the island as Ile aux Alouettes, a name that has not persisted. During the early 19th century, sealing took place with sealing gangs living on the island often for months at a time. There are two graves on the island – one of a sealer buried in 1822, and one of a man named Hardman buried in 1828 by Captain Wishart of the Fairy. Guano was mined on the island for fertiliser until 1861, being transported to Port Fairy in barges. In January 1936 a scientific expedition from Melbourne University's McCoy Society visited the island for six weeks and carried out a comprehensive ecological survey. In the waters on the western side of Lady Julia Percy Island lies pieces of a RAAF Avro Anson aircraft. On 15 February 1944, Avro