Istria Peninsula, Croatia
    Cres - rt Grota - Merag

    Grotta

    Best months: Jul–Aug

    Protected Area

    Cres - rt Grota - Merag

    Why dive here

    With 46+ marine species recorded in the area - including dolphins, sea turtles and cuttlefish - Grotta offers some of Istria Peninsula's richest cave diving. Water ranges 12-26°C, warmest July, August, September.

    Best timeJul–Aug
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeDolphins, Sea Turtles and Cuttlefish · 46+ species recorded
    Water12-26°C · warmest July, August, September
    CharacterCave dive
    StandoutDramatic cave topography

    Grotta, on Istria’s coast, isn’t about huge pelagics or endless reef walls. This site offers a different kind of charm, a subtle exploration. We’ve found it particularly good for macro lovers, with red snapping shrimp often seen waving their antennae from crevices and sunset cup corals adding bright splashes of orange to the darker areas. Keep an eye out for poor cod darting between rocks. While it might not blow you away with dramatic scenery, Grotta provides a calm dive, ideal for those who enjoy slowing down and appreciating the smaller details of the Adriatic.

    Safety Notes

    Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.

    Today06:1317:2711h 13m daylightGolden hour 16:47

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    Conditions

    Ocean conditions, forecast and tides for Grotta

    Grotta Ocean Conditions

    Monthly averages for Grotta, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (45.08, 14.15) (21km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    20°C

    68°F · Range: 18.4–22.3°C

    Current Speed

    3.16 cm/s

    Direction: W (288.4°)

    Salinity

    37.74 PSU

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)

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