The Blue Hole at Dwejra
The Blue Hole is one of the most recognisable natural features on Gozo's dramatic west coast. Located at Dwejra, the circular rock pool is surrounded by limestone cliffs and connected to the open Mediterranean through a spectacular underwater arch.
For divers, the transition from the sheltered Blue Hole through the arch and out onto the open-water reef is one of the defining experiences of diving in Gozo. The surrounding underwater landscape includes steep limestone walls, caves, cracks and abundant marine life.
The Blue Hole is a shore-entry dive site. The site is exposed to sea conditions, so divers should always check local conditions and follow the advice of their dive centre or qualified guide before entering the water.
Dive Information
The Blue Hole
A natural limestone pool at Dwejra leading towards the open sea through an underwater arch.
The Arch
The natural underwater arch is the dramatic gateway between the Blue Hole and the open Mediterranean.
The Reef Wall
Beyond the arch, the seabed falls away along the spectacular Dwejra reef and wall.
Maximum Depth
Depth depends on the route followed and the diver's training and certification. The site includes both shallower and considerably deeper sections.
What You Can See
The underwater scenery is the main attraction of the Blue Hole. Limestone formations surround the pool and continue beneath the surface, creating arches, walls, cracks and sheltered areas where marine life can be found.
Divers may encounter colourful reef fish, sponges, corals, moray eels, octopus and other Mediterranean marine life. Conditions and sightings naturally vary with season, visibility and sea conditions.
Diving the Blue Hole
The dive begins from the rocky shoreline at Dwejra. The Blue Hole itself provides a sheltered starting point before the route continues towards the underwater arch.
Passing through the arch reveals the open Mediterranean and the dramatic reef wall beyond. Experienced divers can explore deeper sections according to their certification, equipment, gas planning and the conditions on the day.
The Blue Hole is particularly memorable because the underwater landscape changes dramatically within a short distance — from the enclosed rock pool to the deep blue of the open sea.
Photographs
Add your main Blue Hole photograph.
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Add your Blue Hole entrance photograph.
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Add your underwater arch photograph.
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Photographs taken at Dwejra will be added to this page as the site is documented.
Location
The Blue Hole is located at Dwejra on the western coast of Gozo, close to the Inland Sea and the remains of the former Azure Window.
Location & Map
The Blue Hole is at Dwejra on the western coast of Gozo, close to the Inland Sea and the Dwejra coastal landscape.
Blue Hole Diving FAQ
Where is the Blue Hole?
The Blue Hole is at Dwejra on the western coast of Gozo, close to the Inland Sea and the former Azure Window.
Is the Blue Hole a shore-entry dive?
Yes. The Blue Hole is accessed from the shore at Dwejra. Divers enter through the natural rock formation before reaching the open sea.
How deep is the Blue Hole?
The Blue Hole itself is approximately 15 metres deep, with deeper routes available beyond the entrance and along the surrounding reef and wall.
What level of diver is recommended?
The Blue Hole is generally recommended for experienced divers, particularly when exploring the deeper sections, caves and surrounding wall.
What can you see when diving the Blue Hole?
The site features dramatic limestone formations, a natural underwater arch, caves, walls and open-water sections. Marine life can include groupers, moray eels, octopus, barracuda, rays and a variety of Mediterranean reef fish.
Can the Blue Hole be dived with the Inland Sea?
The Blue Hole and Inland Sea are neighbouring dive sites at Dwejra and can be explored separately depending on the route, conditions and experience of the divers.
Nearby Gozo Dive Sites
Inland Sea & Tunnel
The Inland Sea is immediately adjacent to the Blue Hole. Its spectacular tunnel leads from the sheltered lagoon through the Dwejra headland towards the open sea.
Explore Gozo
Explore more of Dwejra and Gozo's spectacular coastal landscapes, including cliffs, caves, rock formations and marine environments.