Auckland, New Zealand - There are strict rules in force on this island: No pets are allowed and visitors are told to remove any dirt from their shoes or clothes before they disembark.
"Please ensure that your lunch is kept in a container made of plastic or metal and take all your refuse with you," passengers are told before the catamaran sets off from Auckland harbour
From here, the voyage takes them to Tiritiri Mantangi, an island in the Gulf of Hauraki, just four kilometres from the end of the Whangaparaoa Peninsula and 30 kilometres north-east of Auckland, New Zealand's largest city.