The Twelve Apostles are part of the Table Mountain complex overlooking Camps Bay. The mountain range stretches 6 km almost to Hout Bay. They actually consist of eighteen peaks.

The iconic limestone stacks known as the 12 Apostles are the centerpieces of the Twelve Apostles Marine National Park, which covers a vast area of 7,500 hectares (approximately 75 square kilometers or 19,000 acres). Located along the Great Ocean Road in Victoria, Australia, this marine park extends along 17 kilometers of stunning coastline. While the physical "stacks" themselves occupy only a small fraction of this space, the protected area encompasses the surrounding underwater reefs, shipwrecks (such as the Loch Ard), and a diverse ecosystem of marine life including fur seals and weedy seadragons. In 2026, the "Twelve Apostles Precinct" is undergoing a major redevelopment to better manage the millions of visitors who flock to the viewing platforms. This area is the second-largest marine national park in Victoria, providing a critical buffer for the fragile limestone formations that continue to be eroded by the Southern Ocean at a rate of approximately two centimeters per year.