This six-part series about Aotearoa's flora and fauna marked the first set of documentaries to be made by the BCNZ's freshly born Natural History Unit. The 15 minute episodes showcase White Island, bird life in Ōkārito, the flightless takahē, Waipoua Forest in Northland, wetlands near Dunedin and winter wildlife in Central Otago. Many of the filmmakers went on to make a mark — including directors Neil Harraway and Robin Scholes, and cameraman Robert Brown (The Living Planet). Hidden Places - Ōkārito was named Best Documentary at the 1979 Feltex Television Awards.
Award-winner Hidden Places: Ōkārito marked an early milestone for the Natural History Unit (later to become NHNZ) — it was part of the first series made by the unit. The 15 minute episode follows birds, such as white heron, Russian godwits and royal spoonbills, all of them flocking to Ōkārito's "unique world of sea, lagoon, rivers and forests". Logging of kahikatea, the tallest endemic forest tree, also features. Robin Scholes, later to produce movie Once Were Warriors, wrote and directed this episode. It won Best Documentary at the 1979 Feltex Television Awards.