Buck Island Reef National Monument – St. Croix

Buck Island Reef National Monument is one of the most breathtaking natural attractions in the U.S. Virgin Islands, famous for its turquoise water, protected coral reef, and pristine white‑sand beach. It’s a top choice for cruise visitors who want a true Caribbean escape, offering snorkeling, sailing, and some of the clearest water in the region. Whether you’re exploring the underwater trail or relaxing on the island’s untouched shoreline, Buck Island delivers a picture‑perfect day in St. Croix.
Fun Facts & Background
Buck Island was designated a National Monument in 1961 to protect its rare coral ecosystems and marine life. It’s one of only a few underwater national monuments in the United States. The island itself is uninhabited, and the surrounding reef is home to sea turtles, tropical fish, and vibrant coral formations. The underwater snorkeling trail is one of the most unique features, offering markers that explain the reef’s ecology.
Where It’s Located
Buck Island sits just off the northeast coast of St. Croix. Visitors reach it by boat from Christiansted, which is about a 20–25 minute taxi ride from the Frederiksted cruise pier.
Why It’s Worth Visiting
Cruise visitors love Buck Island for its crystal‑clear water, protected reef, and postcard‑worthy scenery. It’s one of the best snorkeling spots in the Caribbean, and the island’s untouched beach feels like a private paradise. If you’re looking for a nature‑focused excursion that feels special and memorable, Buck Island is hard to beat.
What to Expect During Your Visit
Expect a boat ride from Christiansted, followed by time to snorkel the reef and relax on the island’s white‑sand beach. Most tours include snorkeling gear and guidance, making it beginner‑friendly. The water is incredibly clear, and the reef is full of colorful marine life. The beach area is peaceful, with no facilities — just natural beauty.
How to Get There From the Cruise Port
From the Frederiksted pier, take a taxi to Christiansted (20–25 minutes). Most Buck Island tours depart from the Christiansted Boardwalk or nearby marinas. It’s best to book a tour in advance, as Buck Island access is regulated to protect the reef.

Best Time to Visit
Morning tours typically offer the calmest water and best visibility for snorkeling. Midday sunlight brings out the brightest colors in the reef, making it ideal for underwater photos.
Tips for Visiting
- Book your tour early — spots fill quickly
- Bring reef‑safe sunscreen
- Wear a rash guard for sun protection
- Bring water and snacks (no facilities on the island)
- Choose a tour that includes both snorkeling and beach time
Common Complaints
Some visitors mention that the boat ride can be choppy on windy days. Others note that the snorkeling area can feel crowded when multiple tours arrive at once. Despite this, most travelers consider Buck Island a highlight of their entire cruise.
Final Thoughts
Buck Island Reef National Monument is a must‑see for anyone visiting St. Croix. With its protected reef, stunning water, and peaceful beach, it offers a truly unforgettable Caribbean experience. For more ideas to plan your day in port, explore my full St. Croix Cruise Guide.

