activedivers.org · Community
Published Aug 29, 2023Trip report with Alligator Reef ledge observations, visibility, current, and marine life sightings.
Dive Spot Guide•
Alligator Reef
Shallow lighthouse reef for guided scuba and snorkeling.
ScubaSnorkelBoat EntryBeginner
Reef
Boat-access reef off Islamorada with shallow coral structure, regular guided trips, and conditions that are friendliest in settled weather.
About Alligator Reef
Alligator Reef is a shallow Atlantic reef and lighthouse site off Islamorada with spur-and-groove structure, coral ridges, and sandy lanes that make it a classic guided Keys reef stop. Boat trips here are popular for beginner-friendly scuba and snorkeling when weather is settled, with abundant fish life, frequent turtle and ray sightings, and protected-area rules that help keep the reef focused on non-extractive recreation.
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Research Estimate At Alligator Reef
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 15m
AccessModerate entry effort
Coral HealthHealthy coral
Marine LifeExceptional variety
FacilitiesBasic facilities
CrowdedQuite busy
Current StrengthLight current
Surge StrengthLight surge
Where Is Alligator Reef?
This spotNearby spots
Community sourced coordinates.
Alligator Reef Planning Details
Depth range, seasonality, and planning context.
Reported Depth
2m - 12m
Depth Note
Public sources describe shallow reef sections around 8 feet and operator/community references extending to about 40 feet.
Best Season
The site is usable year-round, with the easiest coral-viewing conditions during clear, calmer Upper Keys weather windows.
Typical Conditions
This is usually run as a calm-weather reef stop, with shallow coral structure, generally light current, and visibility that can change quickly with wind and sea state.
Safety & Access At Alligator Reef
Hazards, restrictions, and access requirements.
Key Hazards
Boat traffic
Safety Notes
Boat traffic around the lighthouse and mooring field is common. Stay with the boat or guide, use mooring setups rather than anchoring on reef, and plan novice trips for calmer weather windows.
Access Restrictions
Located within Alligator Reef Sanctuary Preservation Area; diving, snorkeling, and boating are allowed, but fishing and collecting marine life are prohibited.
Legal Notes
Alligator Reef sits inside a Sanctuary Preservation Area where coral protection rules apply. Do not fish, collect marine life, or damage coral, and use available moorings to avoid reef contact.
Local Intel For Alligator Reef
Community notes to help plan your visit.
Scuba
Scuba trips typically follow moored boats over shallow reef ledges and spur-and-groove structure around the lighthouse area.
Freedive
Freedive use is possible from a support boat when coral protection and traffic awareness remain the priority.
Snorkel
The shallow reef and straightforward guided boat access make Alligator Reef a common snorkel stop when Atlantic conditions are settled.
Alligator Reef Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Alligator Reef.
Current Snapshot
No data
🌥️Variable
Sunrise
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Time
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Sunset
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Surface / Entry
Wind No data · Tide No data
Sea State
Swell No data · Period unavailable
Visibility Outlook
Rain chance No data
Wind
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Swell
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Exposure Profile at Alligator Reef
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
Wildlife at Alligator Reef
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Alligator Reef
Community dive logs and visit reports for this site.
No Dive Logs Yet
Be the first to log a dive at this spot and share your experience!
Dive Spot Log Averages At Alligator Reef
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility15m
Activity
No dive activity logged yet.
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Alligator Reef Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Alligator Reef Guide - Sources and Updates
Last Updated
Research Sources
floridakeys.noaa.gov · Official
Official Alligator Reef SPA overview with habitat, wildlife, beginner-use, and shallow-depth notes.
floridakeys.noaa.gov · Official
Official SPA regulations covering allowed use, fishing and collecting bans, coral protection, and mooring context.
keydives.com · Operator
Operator site with Alligator Reef depth, species, and trip-planning details.
www.divebuddy.com · Community
Community dive page with usage, depth range, and multiple visibility observations.
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