Reefwander
Sunlit reef landscape with a school of fish over coral at Conch Reef in the Florida Keys

Florida Keys · United States · Reef

Rocky Top

A shallow patch reef where turtles, sharks and rays pass

Area photo: NOAA (Maya Walton) · Public domain

A patch reef just off the shore of Islamorada, dived from a mooring ball. The top of the reef sits at about fifteen feet and the sand around it between twenty and twenty-five feet, shallow enough that snorkellers work the same coral from the surface while divers circle the patch below.

Where it is and how deep

Depth profile of Rocky Top: typical dive 4.6–7.6 m (15–25 ft) 18 m · Open Water30 m · Advanced40 m · Recreational limit4.6 m7.6 mtypical dive
Depths on a shared scale to 40 m (130 ft); dashed lines mark common certification limits.

24.8954° N, 80.5724° WPublished position for this site.

The dive

The structure is a coral mass rising out of sand rather than a stretch of reef line, which makes it easy to dive without much navigation: circle the patch and the mooring stays close, so a group can spread out over the heads without anyone losing the boat. Shallow depth and a fixed line keep the whole plan simple, and bottom times run to whatever the gas allows rather than to a no-stop limit.

Fish life over the heads is heavy, with thousands of fish over the coral, and larger animals come through as well: sea turtles, sharks and rays are all on the list here. None of that needs chasing. On a patch this size the reliable approach is to settle on the sand at the edge, stay still, and let the reef go back to normal around you rather than swimming laps of it.

Marine life and season

  • Sea turtles
  • Reef fish swarms
Month-by-month season rating for Rocky Top
JanFebMarAprMayJunJulAugSepOctNovDec
FairFairGoodPrimePrimePrimePrimePrimeGoodGoodGoodFair

Season follows Florida Keys: Winter cold fronts (December-February) bring choppier seas and cooler water; April-August offers the calmest conditions, though hurricane season runs June-November.

Questions divers ask

How deep is Rocky Top?+

The top of the reef is about 15 feet (4.6 m) and the sand around it is between 20 and 25 feet, about 6.1 to 7.6 m, which makes it a shallow dive suited to beginners and snorkellers.

What can you see at Rocky Top?+

The site holds thousands of fish and coral, along with larger marine life: sea turtles, sharks and rays are all seen here. It sits just off the shore of Islamorada and is dived from a mooring ball.

Sources

  1. Rocky Top — Scubago

More dive sites in Florida Keys

Cave & cavern

A long, narrow swim-through at the south end of Molasses

4.6–9.1 mbeginner

The south end of Molasses and the start of the reef drift

to 7.6 mbeginner

Coast Guard cutter on her side at 40 m, in constant current

to 40 madvanced

Two high ledges and a staghorn and elkhorn outplanting site

7.6–10.7 mbeginner

A sand channel running through spur-and-groove coral

10.7–19.8 mintermediate

A freighter cut in half by Hurricane Georges in 1998

21.3–33.5 madvanced

Reef

A sand pit at 15 m (50 ft) leading out to a 27 m (90-foot) drop-off

15.2–27.4 madvanced

Similar dives elsewhere

Reef

Sombrero Reef

Marathon & the Middle Keys · United States

Coral spurs and sand grooves at the foot of the Sombrero Key Lighthouse

2–9 mbeginner

Reef

9 Foot Stake

Key West · United States

Goliath grouper and turtles on a 5-9 m reef fifteen minutes from town

5–9 mintermediate

Reef

Swanee Reef

Sea of Cortez · Mexico

Sea lions, rays and morays over coral heads in 11 m

to 11 mbeginner

Reef

Eastern Dry Rocks

Key West · United States

Coral fingers and sand canyons on an SPA reef a mile east of Sand Key light

0.3–11 mintermediate