O-Whata / Rentons Beach is a coastal park at 1 Renton Road in Māngere, Auckland, rated 4.1 on Google from 19 reviews.
The reserve has a long history, with kauri once standing on the site and fossilised forest remains still visible. The mudflats are quiet, and walkers can see seabirds on the tide. Tide times matter for the mudflats, so check them before you go.
For people in Māngere who want a quiet coastal walk with seabirds and history, this Renton Road park is worth a visit.