Cavern Bay - Istria Peninsula
Cavern Bay, tucked away on Croatia's Istrian Peninsula, is a good pick if you’re looking to add some overhead environment experience to your logbook without going full cave. The entrance is wide open, letting plenty of light filter through the gin-clear water, illuminating the rock formations inside. We’ve found the best time to visit is mid-morning, when the sun is high enough to really make the blues pop. It's an intermediate dive, reaching about 25 metres, so definitely suitable for those comfortable with their buoyancy in tighter spaces. You won't find massive schools of pelagics here, but look closely along the walls and you’ll spot nudibranchs and small crabs.
- Location
- Istria Peninsula, Croatia, Mediterranean & Europe
- Coordinates
- 45.012100, 14.773100
- Type
- cave
- Maximum Depth
- 25m
- Difficulty
- Intermediate
Marine Protected Area: Podmorje istočne obale otoka Krka
Best Time to Dive in Istria Peninsula
The warmest water temperatures in Istria Peninsula occur in August, averaging 26.1°C. The coolest conditions are in March at 11.8°C.
Monthly Water Temperatures
- January: 13.5°C
- February: 11.9°C
- March: 11.8°C
- April: 13.4°C
- May: 17.0°C
- June: 22.4°C
- July: 25.6°C
- August: 26.1°C
- September: 23.6°C
- October: 20.3°C
- November: 17.8°C
- December: 15.8°C
Nearby Dive Sites in Istria Peninsula
- 100 Steps
- 1. Niederbayerischer Tauchsportclub Plattling e.V.
- 3 Zinnen - 18m
- A CAPELLINI - 11m (wreck)
- Accademia Blu Diving Center
- Allgäuer Taucherhof
- Allmannshausen: Naturschutzgebiet
- Allmannshausen: Seeburg
- Allmannshausen: Wasserwacht
- Allmannshauser Steilwand
- Almsee (reef)
- Alpenblick
- Alte Badanstalt
- Alte Brücke-Flurlingersteg
- Alte Julierbrücke
Nearest Dive Centres to Cavern Bay
- 100 x 100 Diving - PADI, TECREC, DAN, EFR
- ACQUASUB VICENZA TEAM asd
- Albarella Diving Center SSDRL
- Apnea Slovenija
- Aquaemotion SSD SRL
- Aquanautic Elba - SSI
Marine Life in Istria Peninsula
Home to 48 recorded species including 28 reef fish, 7 sharks & rays, 3 other, 2 crabs & lobsters, 2 octopus & squid, 1 whales & dolphins.
Notable Species
- Corb (Sciaena umbra) - Reef Fish
- Cape Shark (Squalus acanthias) - Sharks & Rays
- conger (Conger conger) - Reef Fish
- Common lobster (Homarus gammarus) - Crabs & Lobsters
- Common Eagle Ray (Myliobatis aquila) - Sharks & Rays
- poor cod (Trisopterus minutus) - Reef Fish
- Blue Stingray (Pteroplatytrygon violacea) - Sharks & Rays
- Common smoothhound (Mustelus mustelus) - Sharks & Rays
- Painted Comber (Serranus scriba) - Reef Fish
- Wrasse (Coris julis) - Reef Fish
- Blackspotted Smoothhound (Mustelus punctulatus) - Sharks & Rays
- Damsel fish (Chromis chromis) - Reef Fish
- Leidy's Comb Jelly (Mnemiopsis leidyi)
- loggerhead turtle (Caretta caretta)
- Cowfish (Tursiops truncatus) - Whales & Dolphins
- Slender Seagrass (Cymodocea nodosa) - Seagrass & Algae
- hake (Merluccius merluccius) - Reef Fish
- Mullet (Mullus barbatus) - Reef Fish
- european squid (Loligo vulgaris) - Octopus & Squid
- common cuttlefish (Sepia officinalis) - Octopus & Squid
Recommended Packing List for Cavern Bay
Based on average water temperature of 18.3°C, currents 2 cm/s.
- Wetsuit (3-5mm) - comfortable for 18°C water
- Mask - essential for every dive
- Fins
- BCD - buoyancy compensator
- Regulator - your most safety-critical piece of gear
- Dive Computer - tracks depth, time, and NDL
- Surface Marker Buoy (SMB) - essential for boat pickups
- Dive Torch - useful for crevices and colour at depth
- Underwater Camera - capture your diving memories