Croatia · about 30 km from Zadar
Vrulja Modrič
- Max depth36 m
- CertificationFull cave
- Water temperature≈ 9.5–21 °Cestimated, no reports yet
- SpecialDPV-suitable
Diving and fills
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Fills nearby
- Fill stationDiving Center Pongo (Primošten)Air, nitrox (30–36%), oxygen and helium (ask); stage cylinders and 3-litre rebreather cylindersRoute ↗
What it looks like
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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
An anchialine cave: fresh spring water lies over seawater, with a halocline in between (seawater ~21 °C, spring water ~9.5 °C). The cave is decorated with speleothems and has many side passages.
Profile and sections
An anchialine cave: fresh spring water lies over seawater, with a halocline in between (seawater ~21 °C, spring water ~9.5 °C). The cave is decorated with speleothems and has many side passages. At high water it discharges turbid water; at low water seawater moves in with the tide.
PlongéeSout (Fr), DIRSLO (Slo) and AKPP (Fin) explored the cave in 2013–2015 with Croatian cave divers.
- Depth and profile
- Main passage mostly -20 to -25 m, max -36 m; ~2,750 m (abstract) to 2,896 m (paper) surveyed in 2013–2015
- Configuration
- The expeditions used CCR (Megalodon, rEvo), trimix 20/40 and Bonex scooters.
- DPV: DPV-suitable
- Long passages (~2.9 km); the expeditions used Bonex scooters for the far sections.
Who can dive where
- At least Full cave
- Configurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
- Configuration unknown — research beforehand
- Goes down to 36 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
Submarine spring (vrulja) on the coast at Modrič, not far from Rovanjska (Zadar area). How you enter (shore or boat) is not in the sources.
Around Vrulja Modrič
Fills1 fill station · 80 km
Diving Center Pongo (Primošten)
Raduča ul. 11, 22202 Primošten
Air, nitrox (30–36%), oxygen and helium (ask); stage cylinders and 3-litre rebreather cylinders
Not stated — ask
Dive centre with two Bauer compressors and a nitrox and trimix blender; TDI tech courses up to normoxic trimix and gas blender.
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Caves nearby4 within 49 km
News
Access and rules change: check what applies locally right before your trip. Source: GDELT Project and the news feeds of diving magazines. Search for more news ↗ Searched automatically, last on 13 Nov 2026.
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