parkverdict
Snorkeler swimming by Elkhorn Coral at Buck Island Reef NM.Snorkelers in formation departing the concessioner's vessel in route to the underwater trail.Photograph of the trees and vegetation along the hiking trail on Buck IslandPhotograph of snorkeler among the coral reefs at Buck Island
National MonumentVI

Buck Island Reef National Monument

NPS / NPS
66/ 100WORTH IT
parkverdict Experience ScoreIndependent, not sponsored

66 of 100. Our independent metric for how much a unit documents and how easy it is to access, computed the same way for every park so the ranking is reproducible.

Produced by a transparent formula from public NPS data, not a guess. How we score

Our Verdict

Is Buck Island Reef National Monument worth it?

Buck Island Reef is one of the few US national park units where the main attraction sits entirely underwater.

The elkhorn coral reefs are the real draw here, and snorkeling or diving them delivers something genuinely rare on American soil. The 176-acre island adds a short hiking component with rewarding views, but make no mistake: if you are not getting in the water, you are missing the point entirely. Free entry is a genuine bonus, though you will pay to charter a boat to reach it from St. Croix. For water-focused visitors, this is an exceptional and underrated stop.

Who it is for

Snorkelers, divers, and sailors who want a Caribbean reef experience within the US park system will find this deeply rewarding. Landlocked or non-swimming visitors will find the island itself too limited to justify the boat trip out.

Highlights

  • Snorkeling and SCUBA diving over elkhorn coral reefs that rank among the healthiest accessible in the Caribbean
  • Hiking to the island's observation platform for panoramic open-ocean views across St. Croix Sound
  • Kayaking and paddling the calm waters surrounding the island, with strong wildlife and birdwatching opportunities along the shoreline
  • Sailing excursions from St. Croix that frame the monument as a classic Caribbean day-on-the-water experience

Editor's tipThe park closes at 5 pm daily and has no overnight camping, so plan your charter departure from St. Croix early to maximize time on the reef. Mornings typically offer calmer water and better underwater visibility for snorkeling.

What you can do

Activities

BoatingSailingHikingPaddlingKayakingSCUBA DivingSnorkelingSwimmingSaltwater SwimmingWildlife WatchingBirdwatching
Overview

About Buck Island Reef National Monument

Welcome to Buck Island Reef National Monument, called “the finest marine garden in the Caribbean Sea” by President John F. Kennedy. Snorkel the famous underwater trail, explore endangered elkhorn coral reefs. Hike the trails on the 176-acre island to the observation platform for an unparallel view. Discover a vibrant world above and beneath the waves in this Caribbean paradise.

When to go

Welcome to the tropics!