Sibsey Island is an island located in the Sir Joseph Banks Group in Spencer Gulf, South Australia. It was discovered on 21 February 1802 by Matthew Flinders. In modern times, the island is uninhabited.[verification needed]
There are two anchorages on the island, one on the western side of the island, and another on the east. The nearest island within the Sir Joseph Banks Group is English Island. There is a navigational aid located on 2m high pile on the island's highest point, i.e. 26m above sea level. Dangerous Reef, a nearby reef, makes approaching the island in large craft hazardous. [clarification needed]
Australian Sea Lions from nearby English Island are often seen on the rocks near to Sibsey. Seabirds nest on the island, but there are no other large animals present. Marine predators often hunt in the channel between Sibsey and English Islands. The island is part of the Sir Joseph Banks Islands Important Bird Area, identified as such by BirdLife International because of its importance as a breeding site for seabirds and for Cape Barren Geese.
The island has no native economy, being uninhabited. However, the waters surrounding it are used extensively by recreational fishermen. The nearby Dangerous Reef is also a popular tourism spot, with scuba diving operators taking advantage of the natural formations and fish stocks.[verification needed] It is a significant bird, sea lion and great white shark breeding area. The area is also covered under the Lower Eyre Peninsula Aquaculture Policy.
- Flinders, Matthew (1966) . A Voyage to Terra Australis : undertaken for the purpose of completing the discovery of that vast country, and prosecuted in the years 1801, 1802, and 1803 in His Majesty's ship the Investigator, and subsequently in the armed vessel Porpoise and Cumberland Schooner; with an account of the shipwreck of the Porpoise, arrival of the Cumberland at Mauritius, and imprisonment of the commander during six years and a half in that island. (Facsimile ed.). Adelaide; Facsimile reprint of: London : G. and W. Nicol, 1814 ed. In two volumes, with an Atlas (3 volumes): Libraries Board of South Australia. p. 228-229. Retrieved 5 January 2014.
- "Listed by State (i.e. lighthouses & navigation aids)". Australian Lighthouses. Retrieved 5 January 2014.
- "IBA: Sir Joseph Banks Islands". Birdata. Birds Australia. Retrieved 2011-10-10.
- "AMCS Submission on Lower Eyre Peninsula Aquaculture Management Plan". Conservation Council of South Australia. 2005. Retrieved 2006-10-12.
- Account of Matthew Flinders' discovery of the island
- Google Maps photograph of Sibsey and surrounding islands
- The Sir Joseph Banks Island Group
- EYre Peninsula Parks guide - Department for Environment and Heritage
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