Australia, the British "prison island": English is the native language of about 90% (15 million people), but other native languages of the aborigines are spoken as well.
Cook Islands are in free association with
New Zealand, English is official and Maori is spoken as well.
Fiji gained independence from Britain in 1970, but English is not the only official language. Fijian is official as well, and Hindustani and Chinese are spoken.
Kiribati was a Crown Colony until 1979. Besides English, the native Gilbertese language is official as well.
Nauru gained independence from Britain in 1968. English is official and widely understood, but used for government and commercial purposes only and is the first language of only 7% of the population (600 people). The other official language is Nauruian.
New Zealand became independent in 1907. Besides English (first language of 93% - 3 million people), Maori is the language of the aborigines.
Papua New Guinea gained independence from
Australia in 1975. English is official, but spoken only by 1-2%, however, Pidgin English is widespread (66%). Motu and 715 (!) indigenous languages are spoken as well.
Solomon Islands were part of Britain until 1978. English is the official language but used only by 1-2%, and Melanesian pidgin is the lingua franca amongst 120 indigenous languages.
Tuvalu was a colony until 1978. Besides English, Tuvaluan is official.
Vanuatu gained independence from Britain in 1980. English, French and Bislama (Pidgin) are all official, and Melanesian languages are spoken as well.
Western Samoa belonged to
New Zealand until 1962. English and Samoan (Polynesian) are both official languages.