Entrance Island is a low island located inside the mouth of Franklin Harbor,

Eyre Peninsula The Eyre Peninsula is a triangular peninsula in South Australia. It is bounded by the Spencer Gulf on the east, the Great Australian Bight on the west, and the Gawler Ranges to the north. Originally called Eyre’s Peninsula, it was named af ...

South Australia South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories ...

. The island comprises approximately , and falls within the boundaries of the Franklin Harbor Conservation Park and Franklin Harbor Marine Park. Its maximum elevation is approximately 4 metres. The island provides roosting and nesting habitat for a variety of sea and shorebird species. On September 23, 1910, some shearers working on Entrance Island observed a distressed

whale Whales are a widely distributed and diverse group of fully aquatic placental marine mammals. As an informal and colloquial grouping, they correspond to large members of the infraorder Cetacea, i.e. all cetaceans apart from dolphins and ...

reported to be 90 feet long. It had become stranded at low tide, and it escaped when the tide rose."A whale at Cowell"
''The Advertiser'' (1910-09-27). Retrieved 2014-01-11. Smaller southern right whales have also been observed from Entrance Island.

References

{{Islands of South Australia , state=collapsed Islands of South Australia Spencer Gulf Eyre Peninsula