The dive site Fan Reef, also known as Fantastic Reef, is a small offshore rocky reef in the Castle Rocks area on the False Bay coast of the Cape Peninsula, near Cape Town in the Western Cape province of South Africa.

A small relatively low area of moderately deep reef, close to the Miller’s Point slipway.

The site is about half way between Miller’s Point and Castle Rocks and reaches the 30 m depth contour. It is about 1.1 km from the shore directly to the west. North Fan Reef is about 100 m to the north of Fan Reef across the sand.

This site is in a Marine Protected Area (2004). A permit is required. The site is entirely inside the Castle Rocks Restricted Zone, though a few small outliers may be outside.

These areas are situated along the South African Coast and are accessible to the public and are known dive locations to the locals from in and around the area, please respect their local fauna and flora, remember limit your catch and don’t catch your limit.