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Located just off Key Largo, Grecian Rocks is one of Florida’s premier snorkeling sites. Ranging in depth from 6 to 20 feet, this gently-sloping reef dotted with shallow coral heads is home to tons of reef fish. There is also the occasional, and more exciting, barracuda or ray. Here you can spend your time roaming between patches of coral to examine the richness of the Keys reef life.

Snorkelers at Grecian Rocks
Snorkelers at the Grecian Rocks. In the distance, you can notice the barrier reef, which protects the snorkeling area from the waves.

How to get to the Grecian Rocks snorkeling spot

Grecian Rocks is a small reef located some 4.5 miles off Key Largo, at the edge of John Pennekamp Coral Reef State Park. Most of the snorkeling in Key Largo is done from boat tours, with various starting points depending on the tour provider.

Standard boat tours to Grecian Rocks, last about 3 hours. The tours will often combine Grecian Rocks with Dry Rocks, another shallow reef just 1 mile further north.

This area is very popular for hosting the famous Christ of the Deep statue. However, there are a variety of options in the Keys so check the tours offered directly with the providers. It is advisable to book early as the tours can fill several days in advance.

Grecian Rocks snorkeling map, Key Largo
Grecian Rocks snorkeling map, Key Largo.

Water entrance for snorkeling Grecian Rocks

Water entrance will be from your boat.

Grecian Rocks snorkeling exploration tips

Grecian Rocks is a fairly sheltered snorkeling location as it is located on the inner side of the reef. On calm days, a second, more exposed snorkeling area (area 2 on the map) can also be snorkeled.

School of grunt at Grecian Rocks
Schools of grunt from different species shelter near the coral and sea fans.

In the main snorkeling area (area 1 on the map), snorkelers will explore a shallow plateau which is enclosed on its eastern side by a small coral barrier.

On the flat, depth ranges between 20 feet in the mooring area and 6 feet in the shallow eastern part of the plateau, close to the barrier.

At the snorkel entry (mooring area), Grecian Rocks starts as a deep sandy bed dotted with specimens of smaller coral heads. Closer to the reef, the depth decreases and the coverage becomes an overwhelming crust of corals, sponges, and sea fans that are among the best you’ll see in Florida.

Spiny lobster at Grecian Rocks
Big spiny lobsters are sometimes seen in the cracks of the reef.

In addition to the various invertebrate varieties, expect large parrotfish from different species. In particular you will see the Rainbow parrotfish, the Queen parrotfish, and the Stoplight parrotfish.   (see species list at the bottom of the page) There are schools of grunt sheltering near the coral outcrops, as well as colorful butterflyfish, porkfish and wrasse.

Lucky snorkelers may be privileged to see a huge lobster taking refuge in the cracks or a visiting barracuda.

Rainbow parrotfish at Grecian Rocks
The rainbow parrotfish is not often seen at snorkeling depths.

Restaurants and accommodation nearby

Tours usually include snacks and drinks, but confirm this at the time of booking.


  • Level required Intermediate
  • Protected areaFlorida Keys National Marine Sanctuary
  • Maximum depth20 feet/6 meters
  • Water entranceFrom a boat
  • LifeguardNo
  • Visitor numbersHigh
  • Access costsCost of a snorkeling tour

MAP Spot

These spots are accessible to anyone with basic snorkeling skills, and feeling comfortable in the water and with his snorkeling gear. You will enter the water from the shore (beach, pontoon, ladder, rocks) or from a boat. The water height in the sea entrance area is reasonable, but you will not necessarily be within your depth. Moderate currents can occur in the area, even when the sea conditions are good. The distance to swim to reach the most interesting snorkeling areas of the spot does not exceed 200 meters.

This level only apply when the spot experiences optimal sea and/or weather conditions. It is not applicable if the sea and/or weather conditions deteriorate, in particular in the presence of rough sea, rain, strong wind, unusual current, large tides, waves and/or swell. You can find more details about the definition of our snorkeling levels on our snorkeling safety page.