CapeNature is responsible for biodiversity conservation in the Western Cape. It works to establish a successful conservation economy for all through the promotion of nature conservation, income generation, research and training.

Before De Mond became a nature reserve, the area's sand dunes were stabilised with indigenous vegetation. The reserve's vegetation ranges from dune milkwood forests to saltmarshes, which sustain the river's ecosystem. Inland, dune fynbos grows next to limestone fynbos. De Mond is also home to grysbok, steenbok and grey duiker. The only notable predator is the caracal, which is seldom seen. The reserve also has an abundance of reptiles and amphibians. Visitors should look out for puff adders, particularly in spring. The reserve's rich birdlife make it a popular destination for birders. De Mond is a breeding site for the threatened damara and caspian terns. The reserve also protects the rare African black oystercatcher and the endangered blue crane.

CapeNature is driven by the vision to conserve nature for a sustainable future. The organisation's mission is to manage, conserve and promote our human, natural and heritage assets through best practice, access, benefit sharing and sustainable use.