The invasive seaweed Undaria, known as the Gorse of the sea, is wrecking havoc on the native seaweed of New Zealand.
The process of picking away the pest, plant by plant, in Fiordland has been documented by emerging filmmaker Bérénice Mathieu as part of her work as a student at Otago University's Centre for Science Communication.
The students work will be shown at a festival in Dunedin this weekend. Bérénice is here to talk about why she made The Silent Invader. If you want to see the films, details are here.
