About VI Ecotours
VI Ecotours is the only operator with exclusive access to the Cas Cay Mangrove Lagoon Wildlife Sanctuary and Marine Reserve on St. Thomas. Based at Estate Nadir on the island's southeast coast, the company has built its reputation around eco-conscious kayak, hike, and snorkel adventures that showcase one of the Caribbean's most biodiverse coastal ecosystems.
Their signature Cas Cay tour combines paddling through mangrove tunnels, hiking volcanic rock formations and tidal pools, and snorkelling over coral gardens teeming with sea turtles, rays, and tropical fish. They also offer night kayak tours with LED-illuminated clear-bottom kayaks, stand-up paddleboard rentals, and half- or full-day kayak hire for self-guided exploration. Every tour includes full instruction beforehand, making them accessible to children, seniors, and complete beginners.
What makes VI Ecotours special is the exclusivity of their operating area — no other tour company is permitted in the sanctuary, so guests enjoy an uncrowded, genuinely wild experience just minutes from the cruise port. The guides are passionate naturalists who bring the mangrove ecosystem to life with expert commentary on the birds, fish, and geology you encounter along the way.
