Malta, Gozo and Comino · about 2 km from Sliema
Għar Ħarq Ħamiem
- Max depth52 m
- CertificationFull cave
- Water temperature≈ 16–26 °C, varies with the seasonestimated, no reports yet
- SpecialSidemount
Diving and fills
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Fills nearby
- Fill stationTechwise (St Julian's, Malta)Gas blending (ask about mixes and fill pressure)Route ↗
- Fill stationDive Systems (Sliema, Malta)Custom nitrox and trimix (three compressors; continuous-flow and partial-pressure blending)Route ↗
- Fill stationMaltaqua (St Paul's Bay, Malta)Air, nitrox and trimix, any mix, up to 300 barRoute ↗
What it looks like
All 1 videos and posts
Videos and posts
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Other people's footage, not advice: how someone else dives here says nothing about what suits your team. Dive within your training.
The dive
No daylight reaches this cave. It has two chambers on different levels, joined by a narrow passage. The water is layered: fresh at the top, brackish lower down and seawater at the bottom.
Profile and sections
No daylight reaches this cave. It has two chambers on different levels, joined by a narrow passage. The water is layered: fresh at the top, brackish lower down and seawater at the bottom. The cave is very silty, with a yellow silt layer, and rubbish has been dumped in it. It is home to an endemic amphipod, the 'albino shrimp'.
This is Malta's only known fully submerged land cave, according to Lovin Malta as large as the Mosta dome. It has been protected since 2008 as an Area of Ecological Importance and Site of Scientific Importance.
- Depth and profile
- To -52 m; thermocline in the top 3 m, halocline/chemocline around -18 m; length ~20–30 m
- Configuration
- Sidemount or small recommended: narrow connecting passage between the chambers
- DPV: Not DPV-suitable (estimate)
- Small, deep and silty; not a scooter dive.
Who can dive where
- At least Full cave
- Configurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
- Goes down to 52 m (trimix or deco may be needed)
- Experienced divers only
This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.
How to get there
Land cave on private land near St George's Bay: a built staircase leads down to the water in the upper chamber; the lower chamber can only be reached by diving. Only with the owner's permission; no dive centre offers it.
Around Għar Ħarq Ħamiem
Fills3 fill stations · nearest 1 km
Techwise (St Julian's, Malta)
Westin Dragonara Complex, St Julian's STJ 3143, Malta
Gas blending (ask about mixes and fill pressure)
Ask
On Malta: drive time includes the ferry. Tech centre with CCR courses (JJ-CCR, Fathom/Gemini, Divesoft Liberty), cavern course and scooters. Walk-in fills: ask.
Dive Systems (Sliema, Malta)
Tower Road – Tower Point – Exiles, Sliema SLM 1601, Malta
Custom nitrox and trimix (three compressors; continuous-flow and partial-pressure blending)
Ask
On Malta: drive time includes the ferry. CCR rental: JJ, X-CCR, AP, rEvo and Liberty; 2 and 3 l CCR cylinders; OC and CCR tech courses. Walk-in fills: ask. Storm Harry (Jan 2026) wiped out an unnamed dive centre on the Sliema waterfront — check in advance that this centre is operating normally.
Maltaqua (St Paul's Bay, Malta)
Mosta Road, St Paul's Bay SPB 3114, Malta
Air, nitrox and trimix, any mix, up to 300 bar
May–Oct Mon–Sat 8:00–16:30; Nov–Apr Mon–Fri 8:00–15:00, Sat 8:00–14:30; closed Sundays
On Malta: drive time from Marsalforn includes the ferry. CCR training; guided day trips to wrecks, caves and caverns. Walk-in fills for visitors: ask.
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