Scuba Diving at St. Marks Reef A6

Diving atSt. Marks Reef A6 (United States)

Careful planning is essential when venturing to St. Marks Reef A6, a site marked by artificial reef modules. Approximately 2.7 nautical miles from St. Marks Birdrack, precise navigation guides divers to these specific structures. Divers should be prepared for varying offshore conditions, which can influence visibility and comfort. A maximum depth of 6.4 m (21 ft) makes this an accessible site, but situational awareness remains paramount.

Tonight's objective overview for St. Marks Reef A6 shows an air temperature of 28°C. The measured surface conditions include wave heights around 0.4 m. This environmental data is logged for the close of the day.

Dive Site Location & Key Facts

Everything you need to know about this dive site.

Max Depth--
Entry Type--
Water Typesalt
Dive Types
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Dive Site Overview

An integral component of St. Marks' marine enhancement efforts, Reef A6 distinguishes itself through its specific deployment of four reef cube modules. Carefully placed on a predominantly sandy bottom, these structures were designed to foster new marine habitats and support biodiversity.

This site exemplifies a broader regional initiative that has strategically deployed one-ton concrete cubes across 17 different areas within the St. Marks region. Primary objectives for these artificial reef installations include complementing existing natural formations and creating vibrant aquatic environments for both recreational fishing and diving. Engaging with Reef A6 means observing how engineered structures successfully integrate into the local seabed.

Divers gain insight into habitat creation, witnessing a variety of species that have adopted the modules as their home and foraging grounds. Exploring within the recreational depth range allows for extended observation of the established ecosystem around these cubes.

Straightforward navigation provides a rewarding experience for divers eager to witness human-made interventions supporting marine life.

St. Marks Reef A6

Conditions are Good

7/10
Confidence: 8/10
Indicates meteorological model agreement and data availability.

Best Dive Window

Optimal conditions expected

06:12
18:45
H: 10:45
L: 16:20
Air / Sea Temp
28° / 29°
Wave Height
0.7 m
Wind Speed
30 km/h W
Rain Chance
50%

Current conditions near St. Marks Reef A6 show 28° air, 29° sea temperature, 0.7 m waves, and 30 km/h wind. Forecast data is refreshed regularly to ensure accuracy.

Radius: ~12km
Updated: Jun 11, 2026, 22:12 local time
MARINE: OPEN-METEOWEATHER: YR.NO

Best Time to Dive

For optimal diving experiences, consider visiting St. Marks Reef A6 during the autumn months, particularly October and November. These months consistently show 'Excellent' dive scores, benefiting from lower average rainfalls of 1.3 to 1.6 mm. Air temperatures during this period are quite pleasant, ranging from approximately 18-22°C (64-72°F). Diving can certainly occur throughout the year; however, summer months (July-September) bring warmer air temperatures, around 27-28°C (81-83°F), but also higher average rainfall, which might occasionally impact visibility or comfort. Winter diving is feasible, though air temperatures drop to 11-14°C (52-57°F), requiring suitable exposure protection.

PEAK SEASON SCORE

83/100
Very Good

Scores combine air & water temps, waves, wind & rainfall for overall conditions.


BEST MONTHS TO DIVE

MAY
JUL
OCT
DIVE SCORE
(0–100)
71
JAN
74
FEB
74
MAR
75
APR
83
MAY
80
JUN
86
JUL
82
AUG
82
SEP
84
OCT
81
NOV
75
DEC
AIR TEMP (°C)
11
14
18
21
25
27
28
28
27
22
18
14
WAVES (M)
0.5
0.5
0.6
0.6
0.5
0.6
0.4
0.4
0.4
0.4
0.4
0.5
WIND (KM/H)
30
29
30
30
28
30
25
28
28
27
26
28
RAIN (MM)
2.9
2.2
4.8
2.9
3.4
4.1
4.1
5.6
6.1
1.3
1.6
4.1
DIVE SCORE GUIDE (0–100)
Excellent (90–100)
Very Good (80–89)
Good (70–79)
Moderate (50–69)
Poor (30–49)
Not Recommended (0–29)

Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.

Dive Experience & Conditions

Descending into the shallow waters of St. Marks Reef A6, divers will immediately encounter the four distinct reef cube modules that define this site. The maximum depth remains a consistent 6.4 m (21 ft), allowing for extended bottom times and ample light penetration. Visibility here can vary, influenced by recent weather patterns and tidal movements, which is common for nearshore artificial reefs. During calmer periods, the structures clearly emerge from the sandy bottom, revealing their purpose as marine habitat. Wave heights typically range from 0.4 to 0.6 meters (1.3 to 2.0 feet) depending on the month, suggesting generally manageable surface conditions. Expect a gentle current on some days.

Dive Difficulty & Safety Guidelines

St. Marks Reef A6 caters to a broad range of diver skills, from open water certified individuals to more experienced explorers, due to its modest depth. Always conduct thorough dive planning, including checking local weather and sea conditions before heading out. Given the site's offshore nature, ensuring your vessel has appropriate safety gear and communication devices is crucial. Navigational aids are essential for accurate relocation of the specific reef modules from your St. Marks Birdrack reference. While a natural ledge nearby is noted for shark activity, general awareness of marine life and adherence to safe diving practices are always recommended at any site.

Recommended Equipment

  • Dive Computer

This gear list is based on verified equipment signals for St. Marks Reef A6, United States. Always confirm final gear choices with your dive operator, guide, or liveaboard.

Recommended Dive Suit

Water temperatures at St. Marks Reef A6 are currently estimated to be around 29°C (85°F), shaping the overall diving conditions for today. Surface air temperatures are resting at 28°C (82°F).

Dive skin or rash guard is generally considered suitable for water temperatures like this. A hood or vest is suggested for sensitive divers due to surface winds.

Forecast trends indicate similar diving conditions over the next few days.

St. Marks Reef A6 conditions last reviewed: 22:12 local time (UTC-6), Jun 11, 2026

Due to technical issues with our weather providers, data hasn't been fetched for over 48 hours. The data above reflects the conditions at the time of the last successful fetch.

Emergency & Medical Support

Essential information to help you plan your dive trip to St. Marks Reef A6.

Hyperbaric Chamber

Hyperbaric chambers are a critical part of dive safety infrastructure. Availability varies significantly by region, and not all dive areas have immediate access.

Before diving, it's recommended to:

  • confirm nearest medical facilities
  • check emergency procedures with local dive operators
  • ensure dive insurance covers evacuation if required
24/7 Available

Divers Alert Network

Diving emergency assistance available through DAN World.

+1-919-684-9111
  • 24/7 emergency hotline
  • Diving medical assistance
  • Evacuation coordination
View official DAN emergency contacts

Emergency contacts are provided for reference. Always verify local emergency services before diving.

Marine Life at St. Marks Reef A6

Upon approaching the modules, divers often notice congregations of fish seeking shelter within the crevices of these artificial structures. Snapper and jacks are frequently observed, utilizing the cubes for foraging and refuge. The artificial nature of the reef is specifically designed to attract a diverse array of species, enhancing local biodiversity. Lionfish are present in the region, and local management efforts, including organized hunts, work to control their population, which divers may occasionally witness.

Dive Centers Near St. Marks Reef A6

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Nearest Airports

Nearest airports to help plan travel to this dive area.

Tallahassee International AirportTLH
48 km
Valdosta Regional AirportVLD
121 km
Northwest Florida Beaches International AirportECP
163 km
💵Currency:USD

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Frequently Asked Questions

What kind of structures will I find at St. Marks Reef A6?

St. Marks Reef A6 consists of four distinct reef cube modules. These are part of a larger artificial reef system designed to enhance marine habitats and recreational opportunities in the area.

What is the maximum depth at St. Marks Reef A6?

The maximum depth at St. Marks Reef A6 is a consistent 6.4 meters (21 feet). This shallow depth makes it suitable for divers with various experience levels.

Is St. Marks Reef A6 suitable for beginner divers?

Yes, its shallow depth and defined structures make it accessible for beginner divers. Always ensure you are comfortable with the day's conditions and dive within your certification limits.

What is the best season to dive St. Marks Reef A6?

The autumn months, particularly October and November, offer the best conditions with 'Excellent' dive scores, lower rainfall, and pleasant air temperatures. However, diving is possible year-round with appropriate gear for varying temperatures.

What kind of marine life can be seen at the reef?

Divers commonly encounter various fish species, including snapper and jacks, utilizing the reef cubes for shelter and feeding. The site's artificial nature attracts a diverse marine population, and lionfish are also present in the wider region.

What is the offshore distance to St. Marks Reef A6?

Reef A6 sits approximately 2.7 nautical miles from the St. Marks Birdrack. Precise navigation is important for reaching the specific reef modules.

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