Scuba Diving at Keewaydin 3 Mile #4

Diving atKeewaydin 3 Mile #4 (United States)

Keewaydin 3 Mile #4 is an excellent destination for certified divers looking to explore well-established artificial reefs within Southwest Florida. This site is particularly suitable for Open Water certified individuals who have logged a dive within the past year, offering a reliable entry point into the region's diverse underwater environments. Divers seeking to expand their skills, including navigation or deep diving, will find the local dive operators prepared to facilitate advanced training here.

Current morning readings from Keewaydin 3 Mile #4 indicate an air temperature of 28°C. Surface wave heights are averaging around 0.1 m at this time. These local measurements provide a baseline for your daily dive planning.

Dive Site Location & Key Facts

Everything you need to know about this dive site.

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

The thoughtful establishment of this site by Collier County aimed to create a robust artificial reef, primarily through the deployment of significant limestone boulders. These structures introduce complex habitats into an area otherwise defined by a predominantly sandy bottom.

Contributing to a larger network of artificial reefs, it transforms a relatively barren seafloor into a more vibrant underwater environment. Divers exploring this location will find themselves navigating around and over these substantial boulders. Observing how they mimic natural reef formations, the structures provide essential shelter for numerous species.

Maximum depths at the site allow for exploration within typical recreational limits, typically extending to an area where a wide range of species congregate. While specific reported depths for Keewaydin 3 Mile #4 are limited, general regional data for similar artificial reefs suggests depths are often within the 18-30 m (60-100 ft) range, making it accessible to certified Open Water divers.

Located off Marco Island, this reef provides crucial foraging grounds, drawing in a surprising abundance of various fish species. It's a testament to how human intervention, when planned thoughtfully, can dramatically improve local underwater topography and biodiversity.

The site's design effectively concentrates aquatic life, offering a distinct contrast to the surrounding flat, sandy terrain and enriching the diving experience for many.

Keewaydin 3 Mile #4

Conditions are Excellent

9/10
Confidence: 8/10
Indicates meteorological model agreement and data availability.

Best Dive Window

07:00 - 14:00

Optimal conditions expected

06:12
18:45
H: 10:45
L: 16:20
Air / Sea Temp
28° / 31°
Wave Height
0.1 m
Wind Speed
13 km/h W
Rain Chance
50%

Current conditions near Keewaydin 3 Mile #4 show 28° air, 31° sea temperature, 0.1 m waves, and 13 km/h wind. Forecast data is refreshed regularly to ensure accuracy.

Radius: ~12km
Updated: Jun 13, 2026, 23:19 local time
MARINE: OPEN-METEOWEATHER: YR.NO

Best Time to Dive

Planning a dive at Keewaydin 3 Mile #4 yields the most comfortable conditions from May through September, when dive scores consistently rate as 'Excellent'. During these months, the average air temperatures are notably warmer, ranging from 26.5°C to 28°C (80-82°F), making surface intervals more enjoyable. Wave heights are typically lower, often below 0.4 meters (1.3 ft), contributing to calmer boat rides and better underwater visibility. While there's a slight increase in rainfall during these summer months, the benefits of warmer water and settled sea conditions generally outweigh this, ensuring a pleasant diving experience. Conversely, the cooler months from January to April and October to December still offer 'Good' dive conditions, with air temperatures between 17.5°C and 25°C (64-77°F) and slightly higher, though still manageable, wave activity.

PEAK SEASON SCORE

92/100
Excellent

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


BEST MONTHS TO DIVE

MAY
JUL
SEP
DIVE SCORE
(0–100)
82
JAN
84
FEB
85
MAR
88
APR
93
MAY
88
JUN
95
JUL
89
AUG
91
SEP
87
OCT
90
NOV
86
DEC
AIR TEMP (°C)
18
18
22
24
26
27
28
28
27
25
22
20
WAVES (M)
0.6
0.6
0.6
0.5
0.4
0.4
0.3
0.4
0.4
0.5
0.5
0.5
WIND (KM/H)
19
18
19
20
17
17
14
16
16
19
18
18
RAIN (MM)
1.4
1.6
3.4
1.4
2.0
8.3
4.4
6.5
5.4
3.4
1.4
2.2
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

Approaching this artificial reef, divers should anticipate conditions typical of Collier County, where the bottom is generally shallow and sandy. Specific depths for Keewaydin 3 Mile #4 are not consistently reported, but other local artificial reefs and general regional patterns suggest a recreational depth range, likely within 18-30 m (60-100 ft). This makes it accessible for Open Water divers, while Advanced Open Water training dives, including deep dives, might explore the lower end of this range or deeper nearby sites. Visibility often depends on recent weather patterns and tidal movements, but the area is known for supporting a rich marine community despite shallower depths. Divers should be aware that currents can vary depending on conditions, potentially offering opportunities for drift diving experiences, particularly along the edges of the reef structure.

Dive Difficulty & Safety Guidelines

For a safe and enjoyable dive at Keewaydin 3 Mile #4, adherence to local dive operator requirements is essential. Divers must be at least PADI Open Water certified and demonstrate that they have gone diving within the last year. If recent dive experience is lacking, a refresher course is a recommended preparatory step before planning a trip. Always check current weather forecasts before departing, as conditions, particularly wave height and wind speed, can influence dive accessibility and comfort. Carrying a surface marker buoy is a prudent practice for all dives in open water environments. Familiarizing yourself with the dive site layout and any specific local regulations regarding marine life interaction before entering the water will enhance the experience.

Recommended Equipment

  • Dive Computer

This gear list is based on verified equipment signals for Keewaydin 3 Mile #4, United States. Always confirm final gear choices with your dive operator, guide, or liveaboard.

Recommended Dive Suit

Divers visiting Keewaydin 3 Mile #4 today can expect water conditions around 31°C (87°F). Surface air temperatures are resting at 28°C (82°F).

Dive skin or rash guard is generally considered suitable for water temperatures like this.

Conditions in the coming days are expected to stay within a similar temperature range.

Keewaydin 3 Mile #4 conditions last reviewed: 23:19 local time (UTC-5), Jun 13, 2026

Emergency & Medical Support

Essential information to help you plan your dive trip to Keewaydin 3 Mile #4.

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 Keewaydin 3 Mile #4

A diverse array of marine life finds refuge and sustenance at this established artificial reef. In an otherwise sandy environment, the site serves as a vital focal point for aquatic activity. Divers will often observe various reef fish, including snappers and groupers, utilizing the limestone boulders for shelter and hunting grounds. These structures also attract crustaceans and smaller invertebrates, contributing to a complex food web. Acting as a magnet, the artificial reef concentrates fish species, providing opportunities to encounter schools of fish congregating around the protective ledges and crevices of the boulders.

Dive Centers Near Keewaydin 3 Mile #4

Scuba Marco
14.4 km away

Scuba Marco

4.9| 109 reviews
Today: Closed
SunClosed
Mon09:00 - 13:00
Tue09:00 - 17:00
Wed09:00 - 17:00
Thu09:00 - 17:00
Fri09:00 - 17:00
Sat10:00 - 16:00
Cruise Fish Dive

Cruise Fish Dive

4.4| 141 reviews
31.3 km

Nearest Airports

Nearest airports to help plan travel to this dive area.

Southwest Florida International AirportRSW
56 km
Punta Gorda AirportPGD
99 km
Miami-Opa Locka Executive AirportOPF
156 km
💵Currency:USD

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Frequently Asked Questions

What is the certification requirement for diving at Keewaydin 3 Mile #4?

All divers must be at least PADI Open Water certified. Additionally, it's a requirement to have gone diving within the last year to participate in trips to this site. If your last dive was over a year ago, a refresher course may be necessary.

What kind of dive site is Keewaydin 3 Mile #4?

This is an artificial reef constructed from limestone boulders. These structures provide habitat for marine life on what would otherwise be a shallow, sandy bottom typical of Collier County. It's designed to enhance the local ecosystem.

What is the typical depth at Keewaydin 3 Mile #4?

Specific depth details for Keewaydin 3 Mile #4 are not widely published. However, like many artificial reefs in Collier County, it likely falls within a recreational depth range, generally accessible to Open Water divers.

When is the best time of year to dive this site?

The period from May through September generally offers the best diving conditions, with warmer air temperatures and calmer seas. However, good diving conditions extend year-round, with October and November also rated as 'Excellent' for diving.

Are tanks and weights provided by dive operators?

Yes, tanks and weights are typically included with dive trips by local operators. Other equipment like BCDs, regulators, masks, fins, snorkels, and wetsuits are usually available for rental.

Can I complete advanced dive training at this location?

Yes, many local operators offer Advanced Open Water certification, which includes a deep dive and navigation dive, potentially utilizing sites like Keewaydin 3 Mile #4 or similar local reefs to develop these skills. Nitrox upgrades are also available for extended bottom times.

What kind of marine life can I expect to see?

As an artificial reef, Keewaydin 3 Mile #4 attracts a variety of fish species, including snappers and groupers, seeking shelter among the limestone boulders. You'll likely encounter diverse reef fish and other aquatic creatures that inhabit structured environments.

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