Nelson Haven
Nelson Haven is an extensive area of mudflats northeast of Nelson, New Zealand. It is separated from Tasman Bay by the Boulder Bank and over 8 km long and up to 2 km wide. The area is regularly completely drowned and exposed by tidal action and supports a large population of mud crabs.
Coordinates: 41°14′24″S 173°18′18″E / 41.24000°S 173.30500°E
...
Wikipedia