Cygnet River is a locality in the Australian state of South Australia located on Kangaroo Island about 192 kilometres south-west of the state capital of Adelaide and about 12 kilometres from the municipal seat of Kingscote.

Nepean Bay is a bay located on the north-east coast of Kangaroo Island in the Australian state of South Australia about 130 kilometres south-south-west of Adelaide. It was named by the British navigator, Matthew Flinders, after Sir Evan Nepean on 21 March 1802.