Buck Island is a small uninhabited island off the northeastern coast of St. Croix in the U.S. Virgin Islands. Most of the island and surrounding waters form Buck Island Reef National Monument, a protected area known for coral reefs, sandy beaches, dry forest, and marine habitats. The island lies a short boat journey from Christiansted and is surrounded by clear Caribbean waters. Its protected status has limited development, leaving the island without permanent settlements, roads, or commercial buildings. The surrounding reef system is central to its identity and supports a variety of tropical marine species.

Buck Island is part of the cultural landscape of St. Croix, where Indigenous Caribbean, African, European, and maritime traditions have influenced local identity. Archaeological evidence indicates Indigenous use of the island before European colonization, including petroglyphs and other traces of habitation. The island later became connected with the plantation economy and maritime activities of St. Croix. Today, conservation is central to Buck Island’s role, with the National Park Service managing the monument to protect its reefs, beaches, forests, and archaeological resources. Traditional knowledge of local waters also remains important among St. Croix’s fishing and boating communities.

The main attractions are Buck Island’s coral reef, Turtle Beach, and the underwater trail at West End Bay. Guided snorkeling trips allow visitors to follow marked sections of the reef and observe coral formations, tropical fish, sea turtles, and other marine life. The island also contains dry forest habitat and hiking trails leading toward its interior, including routes to viewpoints over the surrounding sea. Historic remains include a Danish colonial-era fortification on the island’s western side and Indigenous petroglyphs near a freshwater pool. The surrounding waters provide habitat for coral reefs, seagrass beds, sea turtles, rays, and numerous reef fish.

There are no permanent restaurants or food businesses on Buck Island, so visitors generally bring food or receive refreshments as part of an organized boat excursion. Meals and snacks available in nearby St. Croix commonly include seafood, johnnycakes, kallaloo, fungi, plantains, and other Caribbean dishes. The island’s most distinctive feature is its protected underwater landscape: Buck Island Reef contains one of the Caribbean’s important living coral reef systems, while the surrounding waters connect reefs, seagrass beds, beaches, and marine habitats. Its combination of protected nature, archaeological remains, and close proximity to St. Croix makes Buck Island an important conservation site in the U.S. Virgin Islands.