Rocky Top

Key Largo, United Statesreef6 m maxbeginner

Conditions & tides

Rocky TopKey Largo

Fair · 4/5

conditions visualisation

Fair4/5

Some chop right now — best window today 7 AM–5 PM.

Wind7 kn ENE

Current~0 kn N · model

Swell

0.1 m · 3s · E

Water

28 °C

Max depth

6 m

Conditions through the day

6 AM6 PM

Calmest current near slack — 01.30 & 13.30 local

Sunrise 06.34 · Sunset 17.38 local

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Tide · local

Outlook — select a day for full conditions

On-face swell 0.1 m — the component of the swell aimed at this site’s exposed face. Current is a regional model value (Copernicus, ~9 km grid) — a guide to the area, not a precise reef measurement. Imagery © Esri · not depth or visibility.

Scored by DiveConnect's site-physics model

Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.

Dived here today? How were conditions vs. what we showed?

About this site

At Rocky Top — a dive that sits at around 30 feet — I.CARE out-plantings of staghorn, brain, and star corals are taking hold and giving the reef new life, and a friendly young green turtle lives here and poses for photographers. The captain named the turtle Rocky. That kind of detail tells you everything about what makes this site different from most shallow reefs in the Keys.

Effective preservation of the main reef came in 1975 with the establishment of the Key Largo National Marine Sanctuary, and protections were expanded further in 1990 when NOAA established the Florida Keys National Marine Sanctuary, incorporating existing sanctuary zones. Rocky Top sits inside that protected boundary, which is a large part of why its corals look the way they do today.

Rocky Top rises from a seagrass flat a few miles offshore, its coral heads climbing as high as 15 feet from the sand. This reef doesn't just have marine life — it has density. Fish fill every layer of the water column, and the coral architecture itself is some of the healthiest along the Florida Keys reef tract. The reef is defined by broad brain and star coral formations surrounded by a forest of purple gorgonians — sea fans and sea plumes that sway in the gentle current.

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Nurse sharks tuck under the ledges. Turtles cruise the top of the reef with the unhurried confidence of animals that know nothing here is going to bother them. Bonnethead sharks are a regular presence for much of the year, and spotted eagle rays pass through on their own schedule. Local conservation initiatives like I.CARE focus on coral restoration and community engagement to protect the marine ecosystem around Rocky Top, and the out-planted staghorn and brain corals are visibly growing back into the structure.

Rocky Top runs 20 to 30 feet deep, with roughly 30 feet of visibility on a typical day. That visibility number is worth setting honest expectations around. Visibility across this part of the Keys averages 30 to 60 feet on most days, and can exceed 80 feet when the Gulf Stream pushes close to the reef — but it can drop temporarily after storms or sustained wind. On a calm, post-frontal morning, Rocky Top can be stunning and gin-clear; after a few days of southerly chop, plan for the lower end of that range. Either way, at 20 to 30 feet, the ambient light is excellent and air consumption is never a worry.

Water temperatures here run 75 to 88°F year-round, and depths are shallow enough that bottom time is rarely a concern. Currents at Rocky Top are typically mild, running 1 to 2 knots, making it comfortable for newer divers to navigate. Ideal conditions are generally found from April through June and again in September, when water temperatures are warm and visibility is at its best.

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