10-25m
    Intermediate
    St. Thomas & St. John, US Virgin Islands
    St. Thomas East End R Reserve

    Cow and Calf Rocks

    Best months: Dec–Apr

    Protected Area

    St. Thomas East End R Reserve

    Why dive here

    With 476+ marine species recorded in the area - including barracuda, blacktip reef sharks, dolphins, eagle rays and humpback whales - Cow and Calf Rocks offers some of St. Thomas & St. John's richest pinnacle diving. Water ranges 27-30°C, warmest August, September, October.

    Best timeDec–Apr
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda, Blacktip Reef Sharks, Dolphins, Eagle Rays and Humpback Whales · 476+ species recorded
    Water27-30°C · warmest August, September, October
    CharacterPinnacle dive · max 10-25m
    StandoutExceptional marine biodiversity

    Cow and Calf Rocks, just off St. Thomas, is one of our favourite spots for a reason. It’s a series of substantial rock pinnacles, a genuine topographical standout. We like to drop in at the Calf, the smaller of the two, and let the current nudge us along towards the Cow. It’s often a drift, which we enjoy. The current, usually mild but sometimes frisky, brings in the bigger stuff. You’ll weave through rock formations, ducking into crevices and overhangs. Keep an eye out for frogfish; they’re masters of disguise here, tucked into sponges. Onestripe eels poke their heads from the sand. We’ve seen cero darting past in tight formations, and the occasional lemon shark cruising the perimeter. The coral isn’t as extensive as some other sites, but the sheer size of the rock structures, draped in scattered pore rope sponges and some impressive grooved brain coral, makes up for it. This site is definitely one for divers who appreciate dramatic underwater landscapes and the chance to see larger schooling fish.

    Typical Cow and Calf Rocks Dive Profile

    5m10mSafety Stop0m10m max~60 min estimated bottom time

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

    Today06:1218:0211h 49m daylightGolden hour 17:33

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    Conditions

    Ocean conditions, forecast and tides for Cow and Calf Rocks

    Cow and Calf Rocks Ocean Conditions

    Monthly averages for Cow and Calf Rocks, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (18.3, -64.89) (1km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    30°C

    86°F · Range: 28.9–31.1°C

    Air Temperature

    27°C

    81°F

    Wind Speed

    7.65 m/s

    14.9 knots

    Atmospheric Pressure

    1013 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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