The On-the-Water Guidebook
Buck Island, the wall, the pier, the bio bay, sails and charters: how the water works here.
The water is the argument for St. Croix. A national monument sits 1.5 miles off the northeast coast with a marked snorkel route through its coral lagoon; a schooner boards for sunset sails in winter; a bay on the north shore glows at night. You can fill a week without ever being deeper than a snorkel takes you — the scuba side of the island has its own book, The Adventure Guidebook. This one covers the surface: where to snorkel from shore, how Buck Island actually works, which boats sail when, and where to point a paddle. Trade winds build through the day here, so the standing rule for everything in this book is: mornings.
Snorkeling
No boat required. The reef meets the shore in more places on St. Croix than almost anywhere under the U.S. flag.
Snorkeling St. Croix
The master plan: which sites suit which swimmers, season by season, from waist-deep seagrass with grazing turtles to the top of a world-famous wall. Start here and the rest of this chapter fills in the detail.
The Best Snorkeling Beaches
The shore entries ranked by effort. Sheltered bays for children and beginners at one end of the scale; the 600-foot swim to the top of the Cane Bay drop for strong swimmers at the other; a pier full of small strange creatures in between.
Buck Island
A 176-acre island, 18,839 acres of protected sea, and a no-take rule that has fattened the fish for sixty years. The signature trip on St. Croix.
Buck Island Reef National Monument
What the monument actually is, and why it matters: Kennedy protected it in 1961, Clinton expanded it in 2001, and an elkhorn barrier reef wraps two-thirds of the island. Turtles nest on its beaches; nothing may be taken from its waters. Background worth having before you book the boat.
The Buck Island Underwater Trail
A marked route through the elkhorn lagoon — one of only three underwater trails in the country. Guides lead small groups; the lagoon is calm and shallow, the corals sit right below you, and the fish, protected for decades, ignore you completely.
Buck Island Boat Tours
Only five operators are authorized to land there, so choosing a boat is a short list, and this page walks it: who leaves from the Christiansted boardwalk, who leaves near Green Cay Marina on the East End, and how the half-day and full-day formats differ.
Under sail
Catamarans dominate the fleet because the reef lagoon rewards shallow draft. Winter adds a tall ship.
Day Sails & Catamaran Trips
The daytime fleet and where it goes — mostly Buck Island, from two harbors. East End villa guests should note the departures near Green Cay Marina; they cut the boat commute to minutes.
Sunset Sails
The west coast faces the sunset over its calmest water, and a 63-foot catamaran sails out of Frederiksted with live musicians aboard, plus monthly full-moon dates. Christiansted boats work the north shore at dusk for guests staying east.
Sailing St. Croix
The island under canvas, including the winter resident: a three-masted replica schooner that ties up at Gallows Bay from late fall through spring and runs public sunset sails to fund student programs. The closest thing the island has to time travel.
Private Boat Charters
From six-guest fishing boats up to a 49-passenger catamaran, with a quirk worth knowing: since only five operators may land at Buck Island, a private charter there is often the same boat on a different schedule, so ask about routing before assuming.
Paddles and power
The sheltered bays are morning water. The one tour in this chapter that runs at night is the one people talk about for years.
Paddleboarding the Calm Bays
Where flat water lives: a protected East End bay with rentals when the concession runs, the leeward west coast, and Salt River with a guide. Go early — by afternoon the trades have turned the easy water into work.
Jet Skis & Watersports
The island's beachfront rental hub operates from Rainbow Beach: jet skis guided or solo, kayaks, boards, snorkel gear and chairs, all steps from the sand. Flat west-coast water is what makes the location work.
Kayaking the Bioluminescent Bay
Salt River Bay glows year-round — a rarity worldwide — and three verified operators paddle it after dark, one in fully transparent kayaks so the light blooms under your seat. Book around the moon: the darker the night, the brighter the water.
Chapters
On the Water in pictures
Verified island photographs; credits on the photo credits page.
