Local dive-center page with cave sequence, depth range, and marine life.
Boat-accessed Istrian tunnel dive with four linked caves.
Boat-accessed Istrian tunnel dive with four linked caves.
Fraskeric Cave is a boat-accessed Istrian tunnel dive on Fraskeric Island, known for four linked caves and a sandy slope that keeps the route readable. The first passages are short and bright, while the deeper tunnels reward steady buoyancy, controlled pacing, and respect for the overhead sections. It is a scenic route with sponges, sea slugs, and fish tucked into the cracks, but it still feels like a cave dive rather than a casual reef swim.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
4m - 25m
Depth Note
The route starts around 4 m on a sandy slope, passes four caves, and reaches about 25 m at the deeper sections.
Best Season
June to October
Typical Conditions
Clear Adriatic water, a sandy approach, and roof-lit tunnels that stay most comfortable when finning is slow and precise.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Keep buoyancy tight in the tunnels, dive the passages in the order the site requires, and avoid bunching in the narrower exits.
Access Restrictions
Boat access and a marked diving buoy are part of the site; the deeper caves are for scuba divers.
Legal Notes
Follow local buoy and protected-site guidance, and use the cave passages only with appropriate certification.
Community notes to help plan your visit.
Scuba Diving
A controlled cave route with a sandy approach, four tunnels, and roof openings that reward precise trim.
Freediving
Not a good freedive target because the main attraction is an overhead tunnel sequence.
Snorkeling
Surface snorkeling around the islet is secondary; the tunnel sequence itself is better done on scuba.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Local dive-center page with cave sequence, depth range, and marine life.
Travel guide highlighting Fraskeric as a four-cave site and recommending June to October.
Dive-center page covering the sandy slope, tunnel order, and boat ride duration.
Official Istria tourism page describing the islet, cave layout, boat access, and protected-site marking.
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