Key West Travel Guide
Key West on the Water
The island lives on the water — how to choose between the Dry Tortugas ferry and seaplane, which reef trip to book, sunset-sail strategy, the best beaches, and how to keep the reef healthy while you enjoy it.
From the streets of Old Town, it is easy to forget that Key West is a speck of land surrounded by some of the clearest water in North America. The island's history — the wreckers, the lighthouses, the forts, the fishing fleet — comes from the sea, and the best days of most trips are spent on it. This guide covers the essential water experiences and how to book them well.
Dry Tortugas National Park: the big one. Seventy miles west of Key West lies Fort Jefferson, a colossal six-sided brick fort begun in the 1840s on tiny Garden Key, surrounded by a moat and turquoise water. It is the most memorable day trip in Florida. Two ways to get there: the Yankee Freedom ferry, the park's authorized concession, departs the Historic Seaport early each morning, crosses in a little over two hours, and gives you about four hours on the island, with breakfast, lunch, snorkel gear, and a fort tour included. Or by seaplane — a spectacular low-altitude flight over the shallows and shipwrecks, with half-day and full-day options, fewer seats, and a higher price. Choose the ferry for value and more time on the island; choose the seaplane if you are short on time, prone to seasickness, or want the flight itself as an experience. Book weeks ahead in winter and spring. On the island, snorkel along the outside of the moat wall, walk the fort's three tiers, and climb to the top for the view.
The reef: half-day snorkel trips. The Florida Keys' coral reef, the only living coral barrier reef in the continental United States, lies a few miles offshore. Half-day snorkel trips leave the harbor every morning and afternoon, visiting reef sites such as the area around Sand Key and its lighthouse, depending on the conditions. Large catamaran trips, like the three-hour two-stop Double Dip, are stable, beginner-friendly, and good value, with gear, flotation vests, and instruction included. Smaller six-passenger boats cost more but offer quieter water and personal attention. Morning trips usually have calmer seas. Be honest with yourself about your swimming ability, and tell the crew if you are nervous.
A word about the reef's health. The Florida reef has suffered from disease and warming water, and the marine heat wave of 2023 caused severe bleaching and coral loss across the Keys. It is still very much alive — fish life is abundant, many corals survive, and restoration groups are planting nursery-grown corals across the reef — and visiting responsibly helps. Use reef-safe sunscreen or, better, wear a rash guard. Never stand on, touch, or kick coral. Keep your fins off the bottom. Do not feed fish. And choose operators that brief guests on reef etiquette.
Sunset sails. Watching the sun set from the deck of a schooner or catamaran, drink in hand, is a Key West classic. Trips leave the Historic Seaport in the late afternoon and sail past Mallory Square at the key moment, so you see the Sunset Celebration from the water. Options range from party catamarans with open bars and live music to quieter wine-and-champagne sails on classic tall ships. Save it for your second or third evening — your first belongs to Mallory Square on foot.
Beaches. Key West has few great natural beaches, and the best on the island is at Fort Zachary Taylor Historic State Park, where coarse sand, shade trees, clear water, and snorkeling off the rocks make for a perfect afternoon, with the locals' favorite sunset view at the end of it. Smaller beaches along the Atlantic shore — South Beach at the foot of Duval, Higgs Beach farther east — are good for a quick dip. For a classic soft-sand beach, drive an hour up the Overseas Highway to Bahia Honda State Park, consistently ranked among Florida's best, with three beaches, the old Flagler railroad bridge, kayak rentals, and boat trips to Looe Key reef.
More ways onto the water. Kayak and paddleboard tours explore the mangrove backcountry north of the island, where you may see rays, small sharks, and wading birds in the shallows. Fishing charters target sailfish, mahi-mahi, and tarpon offshore or bonefish and permit on the flats. Jet-ski tours circle the island. Parasailing offers the view from above. Dolphin-watching trips visit the pods in the backcountry; choose operators who keep their distance and do not chase or feed the animals.
Matching the water to the traveler. Strong swimmers and adventurers should prioritize Dry Tortugas and a small-boat reef trip. Nervous swimmers and families with younger children do best on a large catamaran with flotation vests and instruction, or snorkeling from the beach at Fort Zach where they can stand up when they need to. Couples tend to love the seaplane, a sunset sail, and a quiet kayak tour through the mangroves. Non-swimmers can still enjoy the water: glass-bottom boat trips show the reef from above, and sunset sails require nothing more than a seat on deck.
Weather and planning. Winter cold fronts bring a day or two of strong winds every week or two, which can cancel or roughen trips; spring and summer have the calmest seas. Book your most important water day early in your trip so there is time to reschedule if the weather turns. Take seasickness remedies before boarding, not after. Bring a hat, a rash guard, reef-safe sunscreen, and plenty of water. And plan at least one water day per two days on the island — it is where Key West makes the most sense.