Coral Cave (Dwejra)

A five-minute walk from the car park, over an old quarry bed and a couple of sets of steps, drops divers into Coral Garden: a shallow pool barely 4 metres deep and about 20 metres across. From there the dive turns serious fast. A U-shaped opening in the pool's wall leads onto a steep slope, and that slope is the cavern's entrance. The passage widens quickly into a semi-circular chamber roughly 30 metres across, running 50 to 60 metres back into the rock, with a sandy floor climbing toward 21 metres near the rear wall. Firework anemones cluster close to the entrance, and swallowtail seaperch gather there in numbers most divers don't expect from a cave mouth. There's no need to swim to the very back of the chamber. Light reaches that far already, and the dive's real payoff comes from turning around: the width and curve of the exit opening, framed against open blue water, is the single most memorable view the site offers. Exiting, most divers turn north along the outside wall, past hermit crabs, starfish and small scorpionfish tucked into the crevices, before ascending back through Coral Garden or continuing on toward the Blue Hole.

Coral Cave takes its name literally. The walls and ceiling of the main chamber carry dense colonies of Astroides calycularis, an orange-red coral that thrives in low light rather than needing the sun most reef corals depend on. Few Mediterranean overhead sites carry anything close to this coverage, which is what separates this cavern from Dwejra's other formations.

The chamber has a split identity worth understanding before you book the dive. What most divers experience is a cavern: wide, naturally lit even at the back wall, no penetration required. Turn around at any point and you can still see daylight. A separate hole at the rear of that same chamber is a different thing entirely, a genuine cave, narrow, dark and quick to silt. Two divers are documented in local diving-safety accounts as having died there in 1999. The distinction matters because the two halves of this site carry completely different risk, even though they share one entrance.

The coral itself is the shot here, but getting it right takes more contrast than the ambient light provides. Bring at least one dive light. The orange in Astroides calycularis reads as dull brown-grey without added light at this depth, and a beam brought close reveals the true colour along with the polyps' texture. Buoyancy matters more than usual too. Getting close enough for a clean macro shot without a fin kick or an exhaled bubble touching the coral takes practice, and the coral is fragile enough that contact damages it. The swallowtail seaperch gathering at the entrance make a reliable wide-angle subject against the cavern mouth's light, and the exit view itself, the curved opening framed in blue, is worth saving a few frames for on the way out rather than only shooting on the way in.

Carry at least two dive lights. The overhead environment needs it, and so does getting an honest read on the coral's colour. Control your buoyancy through the entrance passage and anywhere near the coral-covered surfaces: hover rather than settle, since even light contact damages the coral and stirring the sandy floor drops visibility fast. The unlit passage at the back of the chamber is not part of this dive. Stay out of it unless you hold cave-diving training and are diving it deliberately, with the right equipment and a qualified team. A 5mm wetsuit is comfortable in season; add a hood or vest if you feel the cold, since the walk out to Coral Garden leaves you exposed to wind between dives.