Umhlanga Lagoon, Protected coastal reserve in Umhlanga, South Africa.

Umhlanga Lagoon is a 26-hectare nature reserve on the Indian Ocean shore at uMhlanga Rocks, enclosing the Ohlanga River's lagoon and mouth. Its forest continues the larger Hawaan Forest inland of the M4 road, and trails begin at a car park at the northern end of Lagoon Drive. A walkway and pedestrian bridge span the lagoon.

Archaeological shell middens at the site provide evidence of human settlement from the Stone Age, showing that people gathered food here thousands of years ago. These findings reveal that the coast has been an important living space for humans for an extremely long time.

The Ohlanga River's mouth, where the reserve meets the Indian Ocean, holds an unofficial nudist beach. Its growing use by non-nudist walkers and families has brought complaints about nudism and antisocial behaviour. The area was once a no-go zone because of serious crime.

Trails begin at a car park at the northern end of Lagoon Drive in uMhlanga. A walkway and pedestrian footbridge cross the lagoon, linking the two sides of the reserve. The beach at the Ohlanga mouth is an unofficial nudist area, and walkers with families have complained about nudism and antisocial behaviour there.

At the Ohlanga lagoon mouth lies a popular but unofficial nudist beach. Its use by non-nudist walkers and families has brought complaints about nudism and antisocial behaviour, and the area was once a no-go zone because of serious crime.