Harq Hamiem Cave

Malta, Malta

Depth

52m

Visibility

- - -

Entry

Shore

Experience Level

Technical

Harq Hamiem Cave

Malta, Malta

Depth

52m

Visibility

- - -

Entry

Shore

Experience Level

Technical

About Harq Hamiem Cave

Harq Hammiem Cave, also known as Ghar Harq il-Hammiem, is a unique dive site located on the north side of St. Georgeâ€™s Bay in St. Julian's, Malta. This is the only known fully submerged terrestrial cavern in the Maltese islands, making it a special destination for technical divers. The cave features two chambers on different levels, connected by a narrow corridor. The surface of the water is 16 metres below sea level, while the maximum depth reaches 52 metres.

The water inside the cave varies in salinity, starting as freshwater at the surface, becoming brackish with depth, and exhibiting seawater characteristics at deeper levels. This unique environment is home to the rare albino shrimp. Due to the complexity and depth of the cave, this dive site is recommended for divers with technical experience. The dive site type is categorized as a cave.

Harq Hamiem Cave Dive Info

Terrain & Features

Cave

Entry Type

Shore

Max Depth

52m

Visibility Range

— – —

Experience Level

Technical

Best Gas Mix

21% – 23%

O₂

CNS Load (20 min)

13% at 50m / 23%

O₂

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Location

Dive Site Hazards

Remote Silt Disturbance — Silt can be disturbed metres away from the source.
Rapid Stress Escalation — Stress can increase sharply when visibility or navigation degrades.
High Cognitive Load Navigation — Complex passages increase mental workload even on a line.

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