Dry Tortugas RNA - 46-Sq-Mile No-Take Preserve

A black and yellow fish swims among purple sea fans and orange star corals

The RNA's crystal-clear Caribbean waters reveal thriving coral gardens and schooling tropical reef fish. Established in 2007 as a 46-square-mile no-take zone, this marine preserve protects species recovering from decades of fishing pressure. Access is ferry-only from Key West; visitors snorkel, scuba dive, and conduct research under strict protocols that prohibit fishing, anchoring, and specimen collection—making this a working ecological laboratory, not a casual reef visit.

Access & viewing

GPS Coordinates: 24.6555235, -82.9028699

Planning advice

Nearby Attractions: Fort Jefferson (historic fort structure), Little Africa Patch Reef, Garden Key, Bird Key Wreck, Windjammer Wreck, Loggerhead Key, North Coaling Docks, South Coaling Docks, Tortugas Harbor Light
Nearby Facilities: Garden Key Campground (70-person limit), ferry dock with basic facilities, ranger station at Fort Jefferson
Best Time To Visit: Early morning hours for clearest water and best light; visit during November-April for calmest sea conditions
Tips Advice: Bring abundant fresh water—none available in the preserve\n
Reef shoes protect feet from sharp coral\n
Wear biodegradable, reef-safe sunscreen only\n
Morning departures offer clearest water and fewer crowds\n
Sea sickness medication recommended for ferry ride\n
Underwater camera essential for documentation\n
Respect no-take zone—do not touch, collect, or harass wildlife\n
Budget full day: 2-hour ferry + 4-6 hours snorkeling/diving + 2-hour return
Insider Tips: Water clarity best in morning before afternoon wind churns surface\n
Snorkel from dinghy beach near Garden Key for easiest shallow-water entry\n
Arrive early ferry to beat crowds; first departures quietest\n
Bring twice the water you think you'll need; sun + salt air dehydrate fast

More details

Park Area: Dry Tortugas National Park, Gulf of Mexico
Family Friendly Notes: Suitable for families with strong swimmers. Children must wear proper flotation devices and be constantly supervised. Ferry ride is 2+ hours each way; young children may find full-day trip physically challenging. Snorkeling accessible for kids with proper training and gear.
Recent Updates: RNA established 2007. No recent access or policy changes as of 2026. Ferry operators and schedules subject to change; verify before trip.
Attraction Type: Marine Ecological Reserve
Elevation Feet: 0
Distance From Entrance: Ferry departs Key West town (ferry terminal); RNA is 70 miles offshore
How To Get There: Ferry access only from Key West (70 miles). Ferry operators depart from Key West harbor daily; journey is 2+ hours each way. Ferry tickets include $15 park entrance fee. Check ferry schedule before trip as services suspend during high seas. Open 24 hours, 7 days a week year-round.
Parking Availability: Ferry terminal lot at Key West; fills early on popular days
Seasonal Access: Open 24 hours, 7 days a year. Ferry operations dependent on sea conditions; high seas suspend departures without notice.
Entry Fees: $15 per person (under 15 free); valid 7 days. Ferry tickets include park entrance; does not include camping. America the Beautiful annual pass ($80) covers entry.
Main Features: No-take marine preserve, coral formations (staghorn, brain, pillar corals), tropical reef fish (parrotfish, grouper, angelfish, snapper), sea turtles, rays, clear Caribbean water, marine habitat restoration zone, designated research area
What Youll See: Coral formations (staghorn, brain, pillar), dense schools of reef fish (parrotfish, snapper, grouper, angelfish), sea turtles, rays, visibility 60-100 feet on clear days, American white pelicans, clear blue Caribbean water
Unique Characteristics: Only no-take marine preserve in the Gulf of Mexico. Designated research natural area. Home to recovering coral reef systems previously damaged by overfishing. Federal marine biology research laboratory.
Safety Considerations: Water depth ranges from shallow to 40+ feet. Currents can be strong; always use a buddy system. Divers must carry proper PADI or equivalent certification. Snorkelers need swimming competence and proper gear. Ferry access is weather-dependent; high seas suspend operations. No anchoring allowed; stay within designated snorkel/dive areas only. Specimen collection strictly prohibited—this is an active research area. Reef shoes protect feet; wear biodegradable sunscreen to prevent coral damage.
Photo Opportunities: Coral gardens at 20-40 feet, schooling reef fish, sea turtles, surface shots of pelicans, clear-water seascape reflection photography
Photography Spots: Dinghy beach for shallow-entry coral gardens, deeper reef zones (30-40 ft) for larger groupers and sharks, surface for pelican action shots
Cell Service: No to minimal cell coverage in the preserve
Nearby Services: Key West town (hotels, restaurants, dive shops, gear rental, supplies) 70 miles away
Common Wildlife: American white pelicans, tropical reef fish (parrotfish, angelfish, squirrelfish, snapper, grouper), sea turtles, rays, sharks, staghorn corals, brain corals, pillar corals
Best Wildlife Times: Year-round. Sea turtles most active May-September. Pelicans year-round. Reef fish activity peaks morning hours before sun intensity.
Scientific Interest: Coral reef ecosystem recovery post-fishing pressure. Visible marine biodiversity restoration. Habitat rehabilitation protocols in active implementation. Diverse fish recruitment patterns in protected zone.
Best Visit Times: Weekday mornings outside March-April peak season offer fewer crowds and earliest ferry departures
Best Season: November to April (winter dry season, calmer seas, better visibility)
Weather Patterns: Afternoon thunderstorms common June-September. Rough seas and strong swells November-February may suspend ferry operations. Best conditions June-August (calmer water, higher visibility, warmer). Atlantic hurricane season September-November affects access.
Busiest Season: March-April, June-August
Fishing Species: No fishing allowed in the RNA; strictly protected no-take zone
Fishing Nearby: 0
Swimming Allowed: 1
Boating Allowed: 1
Review Summary: Visitors consistently praise water clarity and coral health. Frequent comments confirm pristine condition relative to other reefs. Some report ferry journey taxing for families with young children. Photography enthusiasts rate it highest-value marine location in Florida keys.

Location

Frequently asked questions

Can I fish in the RNA?

No. The RNA is a strictly protected no-take zone. All fishing, spearfishing, and specimen collection are prohibited to protect marine habitat recovery. Violations carry federal penalties.

Do I need scuba certification to visit?

No. Snorkeling from the surface requires no certification and is fully accessible. Only certified divers (PADI Open Water or equivalent) should descend below snorkel depth.

Is the long ferry ride worth it?

Yes, if you're a committed snorkeler or diver. The preserve offers pristine coral reefs and marine life unmatched in Florida. Casual swimmers may find the 4+ hour round trip tiring.

Can I anchor my own boat?

No. Anchoring is prohibited everywhere in the RNA. Access is ferry-only or by authorized research vessel with mooring buoy permit. This protects the seabed.

What if sea conditions worsen while I'm there?

Ferry return is dependent on sea state. Ferry operators may delay or cancel return trips in rough seas. Never plan same-day trips; allow flexibility. Worst-case scenario: overnight at Garden Key Campground.

Is the preserve too crowded?

Weekday mornings (first ferry departure) are quietest. Peak crowds occur March-April and June-August on weekends. Early arrival (dawn ferry) gives 2-3 hours before afternoon visitors arrive.