Mangawhai Estuary is a coastal lagoon located in the Northland region of New Zealand. It is formed where the Mangawhai River meets the Pacific Ocean, creating a unique ecosystem that supports various wildlife, including birds and fish. The estuary is popular for recreational activities such as kayaking, fishing, and birdwatching. The surrounding area features beautiful sandy beaches and scenic walking trails, making it a favored destination for both locals and tourists. The estuary plays a crucial role in the local environment, providing habitat for numerous species and contributing to the region's biodiversity.