Sanganeb is a coral atoll rising out of deep water about 30 km northeast of Port Sudan — an isolated platform in the open Red Sea, accessible only by boat and part of a national marine park established in 1990. The diving here is considered among the best in the world: near-vertical walls dropping hundreds of metres, dense schools of fish, regular appearances of hammerhead sharks, and reef structure in exceptional condition due to minimal human disturbance.
The atoll is surrounded by currents that feed large pelagic fish, and the shark population is notably healthy. Most visitors come on liveaboard dive boats operating out of Port Sudan; day trips are also possible when conditions are calm. The lighthouse on the northern tip of the reef is a landmark visible from far offshore.