This report presents population estimates for cockles Austrovenus stutchburyi and pipi Paphies australis across 12 sites in northern North Island for the 2018–19 fishing year. In addition to population data, it includes sediment grain size and organic content data for Aotea Harbour, Hokianga Harbour, Kawakawa Bay (West), Mangawhai Harbour, Mill Bay, Ngunguru Estuary, Ohiwa Harbour, Otūmoetai (Tauranga Harbour), Ruakaka Estuary, Te Haumi, Whangapoua Harbour and Whangamatā Harbour.
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