The Bot River Estuary lies on the eastern boundary of the Kogelberg Biosphere Reserve, on the southern tip of Africa. It’s an area with by far the greatest biodiversity in the world.
This special place supports 1880 species in an area of roughly 100,000 hectares (156 square miles). By comparison the South American rainforest, the next richest area, has just 420 species per 10,000 square kilometres (386 square miles).
In this photo, taken at sunset, the estuary mouth is at centre on the horizon, about 2 kilometres (1.25 miles) away. Occasionally the mouth will open naturally to the sea signalling the start of a new cycle for the many species of fish which spawn in the shallow waters of the estuary.