DivePlnr
    Grouper Grotto dive site
    cave
    17m
    Beginner
    Grand Cayman, Cayman Islands
    Radio Mast - Sand Bluff (Grand Cayman)

    Grouper Grotto

    Best months: Dec–Mar

    Protected Area

    Radio Mast - Sand Bluff (Grand Cayman)

    Why dive here

    With 327+ marine species recorded in the area - including barracuda, bull sharks, oceanic whitetip sharks, orcas and sea turtles - Grouper Grotto offers some of Grand Cayman's richest cave diving. Water ranges 27-31°C, warmest August, September, October.

    Best timeDec–Mar
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda, Bull Sharks, Oceanic Whitetip Sharks, Orcas and Sea Turtles · 327+ species recorded
    Water27-31°C · warmest August, September, October
    CharacterCave dive · max 17m
    StandoutExceptional marine biodiversity

    Grouper Grotto, off Grand Cayman, is a straightforward cave dive. We’re talking shallow, around 17 meters, which makes it perfect for newer divers looking to get comfortable with overhead environments without feeling overwhelmed. Inside, you’ll often find nurse sharks resting on the sandy bottom, and schools of silversides occasionally pour through, creating a shimmering curtain of fish. It’s a good spot to practice buoyancy and light control in a relaxed setting.

    Typical Grouper Grotto Dive Profile

    10m20mSafety Stop0m17m max~50 min estimated bottom time

    Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

    Safety Notes

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

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today06:1818:0611h 48m daylightGolden hour 17:37

    Nearest Dive Centres to Grouper Grotto

    Dive shops near Grouper Grotto

    Ocean Frontiers

    1km away

    Tortuga Divers

    5km away

    Silver Thatch Watersports

    10km away
    Web
    Phone

    Divers Down

    31km away
    Web
    Phone
    Courses

    OCTOPUS

    31km away
    Web
    Phone
    Courses

    Divers Supply

    31km away
    View all dive centres in Grand Cayman

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    Conditions

    Ocean conditions, forecast and tides for Grouper Grotto

    Grouper Grotto Ocean Conditions

    Monthly averages for Grouper Grotto, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (19.38, -81.32) (5km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    30°C

    87°F · Range: 29.1–31.8°C

    Current Speed

    4.47 cm/s

    Direction: NW (296.6°)

    Chlorophyll-a

    0.045 mg/m³

    Very clear (oligotrophic)

    Salinity

    36.14 PSU

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

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