You can also get in from Papua New Guinea if you have your own boat. If you do so, you will need to check in with the department of immigration once you land.
Torres Strait Islands Flag:
The Torres Strait Islander Flag is an official flag of Australia, and is the flag that represents Torres Strait Islander people. It was designed in 1992 by Bernard Namok. It won a local competition held by the Islands Coordinating Council, and was recognized by the Aboriginal and Torres Strait Islander Commission in June 1992.
The Government of Australia granted it Flag of Australia status, under the Flags Act 1953 (Cth), by proclamation on 14 July 1995.
In the 2008 proclamation, the flag “is recognised as the flag of the Torres Strait Islander people of Australia and a flag of significance to the Australian nation generally” and appointed “to be the flag of the Torres Strait Islander people of Australia and to be known as the Torres Strait Islander Flag”.
The green panels at the top and the bottom of the flag symbolize the land, while the blue panel in the center represents the waters of the Torres Strait. The thin black stripes between the green and blue panels signify the Torres Strait Islanders themselves. The white five-pointed star at the center of the flag represents the five major island groups—the Western, Eastern, Central, Port Kennedy and (N.P.A.) Mainland—and the white dhari (dancer’s headdress) around it also symbolizes the Torres Strait Islands people. White symbolizes peace, while the star is a symbol for navigation.