River mouths and the coast
... and provide for a diverse range of human activities and values including recreation, commercial fishing, aquaculture, mahinga kai and tourism - all of which rely on natural processes facilitated by flow regimes and good water quality. These areas are also some of the most important areas to Ngāi Tahu. ...
https://www.ecan.govt.nz/your-region/plans-strategies-and-bylaws/what-we-know/water-story/end-of-river-environments-and-the-coast