St John Caves

The Zodiac drops you at one of the cavern openings and the route from there reads as a slow loop through light. Sun cuts down through the reef roof in moving shafts, hits soft corals and sponges on the walls, and turns the interior into a series of lit chambers connected by short, coral-roofed passages. The roof is rarely far above the dive line and exits stay in view, which is why guides keep this on the Open Water tier rather than treating it as overhead. Cardinal fish hang in dense shoals under the openings and glassfish drift as one body when divers pass. Between the cavern structures, sandy patches open up where blue-spotted stingrays settle. The reef around the labyrinth carries anthias clouds, butterflyfish and the occasional Napoleon wrasse working the edges. A torch helps in the deeper crevices where ghost pipefish, nudibranchs and small shrimp pull divers into a slower macro pace. Dives normally run an hour, and Nitrox extends that without pushing depth.

Most cave-style sites in the Red Sea sit deeper or demand technical training. This one does not. The whole system falls inside Open Water limits and stays daylit throughout, which is the rare combination that earns it a "photographer's dream" framing in operator material. A single dive captures both formats — wide-angle in the light shafts of the larger chambers, macro on the cardinal-fish, ghost-pipefish and nudibranch life packed into the passages. The site also serves as a counterpoint to the rest of the Deep South: while Habili Ali and the outer pinnacles deliver current and pelagic action, the Caves deliver stillness and detail. Experienced guides commonly schedule it as the afternoon dive after two morning wall dives, when ambient light is at its strongest.

Buoyancy and trim do more work here than depth ever does. The coral-roofed passages reward divers who hover rather than settle, and a careless fin-kick silts the interior fast for everyone behind. Bring a torch for the darker pockets where macro subjects hide. Deploy an SMB before every ascent — multiple liveaboards anchor at the area at peak times. Expect to reach the cluster after an overnight sail of roughly 14 hours from Port Ghalib; itineraries normally allocate two to three days at the St. John's reefs with three to four dives a day, and the cavern is one of several stops. Nitrox is standard on most Deep South vessels and worth using here. A southern Red Sea hyperbaric chamber support fee of around 7 EUR per diver is standard on most boats and is collected through the operator. Late 2024 and 2025 trip reports flag coral bleaching at site level, consistent with the wider southern Red Sea event — the cavern topography and the light remain intact.