Green Cay and Protestant Cay
Two small cays off St Croix, one a wildlife refuge for a ground lizard saved from extinction, the other a two-minute ferry from Christiansted.
Updated 3 September 2026
Two small islands sit off the north coast of St Croix and they do quite different jobs. Protestant Cay is a hundred metres from the Christiansted boardwalk, reached by a small ferry that runs continuously, with a beach, a hotel and the closest swimming to town. Green Cay, further east, is a national wildlife refuge and the reason is a lizard: the St Croix ground lizard was wiped out on the main island by introduced mongooses, survived only on Green Cay and Protestant Cay, and has been the subject of a long recovery programme. Landing on Green Cay is restricted, but the water around it is open.
The landscape
- Protestant Cay - a two-minute ferry from the Christiansted boardwalk.
- The St Croix ground lizard - saved from extinction on these cays.
- Snorkelling off Green Cay - clear water and reef around the refuge.
- The Christiansted view - the Danish town from the water.
When to go
December to April is the dry season. The Protestant Cay ferry runs through the day from the Christiansted boardwalk. Boat trips out to the water around Green Cay run from Christiansted; landing generally requires a permit.
Things to know
Green Cay cannot normally be landed on, which surprises people who book expecting a beach day; it is a refuge, not a destination. Protestant Cay is small and its facilities depend on the hotel operating. The ground lizard is nocturnal and secretive and visitors will almost certainly not see one.
Nearby
Christiansted is across the harbour; Buck Island is further east.
What to pack for Green Cay and Protestant Cay
Chosen from what this place is for. Tap a kit for the full checklist.
- Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
- Your own mask + snorkel - A well-fitting mask is the single biggest comfort upgrade underwater. Find on Amazon
- Binoculars - The single best wildlife tool - even a compact pair transforms a sighting. Find on Amazon
- Quick-dry towel - A microfibre towel packs small and dries in minutes. Find on Amazon
Some links on this page are Amazon affiliate links - if you buy through them we may earn a small commission at no extra cost to you.
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.




