The Table Bay Nature Reserve consists of seven parts: Rietvlei Wetlands, Milnerton Lagoon, Milnerton Beach, Milnerton
Racecourse, Zoarvlei Wetlands, Diep River and the Parklands Fynbos Corridor.
This 880 hectare reserve comprises a variety of permanent and seasonal wetlands, and is surrounded by Cape Flats dune strandveld and Cape Flats sand fynbos vegetation.
The reserve protects 412 plant species, 31 mammals, 196 birds, 33 reptiles, nine amphibians, and 14 fish species. It also supports important but as of yet unlisted insect, invertebrate and planktonic communities. Two species are listed vulnerable, and 14 are near threatened.
The Rietvlei Wetland part is a large wetland in the floodplain of the Diep River between Milnerton and Table View that drains into Table Bay via the Milnerton Lagoon. The wetland consists of a variety of habitats, including a permanent freshwater lake, shallow marshes that flood in winter, reed beds, a river, and an estuarine lagoon with salt marshes that is open to the sea. A strip of coastal dunes connects the reserve with the Table Bay coastline.