Dive-site story
Situated along the chain of cays between St. Thomas and St. John, Grass Cay features a gently sloping reef system flanked by scattered coral heads and sand channels. Massive boulder formations create overhangs and resting crevices for marine life, with surrounding seagrass patches that attract foraging turtles and rays.
Extensive boulder overhangs sheltering resting nurse sharks and spiny lobsters
Expansive sandy flats where southern stingrays and spotted eagle rays forage
Healthy soft coral fields and sea fans lining the reef crest
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
Winter and spring bring the calmest seas and optimum water clarity.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Green sea turtleChelonia mydas | Common | ||||||||||||
| Southern stingrayHypanus americanus | Common | ||||||||||||
| Nurse sharkGinglymostoma cirratum | Common | ||||||||||||
| Spotted eagle rayAetobatus narinari | Seasonal | ||||||||||||
| French angelfishPomacanthus paru | Common |
Marine forecast
