The kina (ISO 4217 code: PGK) is the currency of Papua New Guinea. It is divided into 100 toea. The kina was introduced on 19 April 1975, replacing the Australian dollar at par. The name kina is derived from Kuanua language of the Tolai region, referring to a callable pearl shell used widely for trading in both the Coastal and Highlands areas of the country.

Answer this question based on the passage: what is the currency of papua new guinea? OK. Let's think. My stream of consciousness:
The relevant information is: The kina (ISO 4217 code: PGK) is the currency of Papua New Guinea. The answer is The kina.