Located on the south-east coast of St. Thomas is the Mangrove Lagoon Wildlife Sanctuary & Marine Reserve. An attractive and protected area with exceptional natural resources. Manglar islands, rocky cliffs, clear waters, sea grass beds and salt ponds provide rich habitats for reef fish and other marine life as well as many birds. It is common to see nesting egrets, pelicans and herons.
Cas Cay is a 15-acre Wildlife Preserve for white-cheeked pintail ducks, red-billed and white-tailed tropic birds, Brown pelicans, oyster catchers, roseate terns, egrets, herons and sandpipers. A special and rare dry forest ecosystem of mampo, sea grape and ink berry begins at the south side volcanic cliffs and extends into a flat, sandy area with a red mangrove forest, complete with a village of hermit crabs. Full day and half day guided kayak, hike & snorkel multi ecotours are offered daily by Virgin Islands Ecotours.