Off Key Largo, the snorkeling at Grecian Rocks is a popular dive site for beginners with plenty of elkhorn corals and large star corals. The half-mile long, spur-and-groove Grecian Rocks reef averages from 5 to 15 feet below the water. You can expect to find plenty of marine life including barracuda, parrotfish, damselfish, angelfish, eels, crabs and lobsters amongst the elkhorn coral formation. While snorkeling, keep an eye out for an old Spanish cannon embedded in coral.
The Grecian Rocks snorkeling is only accessible by charter boat tour. There are 12 mooring buoys within this Sancturary Protection Area. Grecian Rocks is a crescent shaped patch reef. It is located within the boundary of John Pennekamp Marine State Park.
After a day snorkeling Grecian Rocks, check out the Key Largo Conch House for some cold drinks.
While the snorkeling at Grecian Rocks is possible year-round, most snorkelers usually shoot for March through September. There is usually some rolling surf at most snorkeling sites off Key Largo, while you can expect the flatest surf conditions from June through August.
To reach the snorkeling in the Florida Keys by air, there are several options. The most popular option is to fly into Miami International Airport (MIA), which is served by all major US and international airlines. Also nearby, a potentially lower cost option is to fly into Ft Lauderdale airport (FLL). From either of these airports, you can rent a car to drive south on the Florida Turnpike a couple hours to reach the Florida Keys (watch out for automated cash-less toll highways along the way). Alternately, you can fly into Key West International Airport (EYW) which is served by several airlines including United/Silver Airways, Delta, USAir and Southwest. If you don’t mind coming into Key West, there is also the regular Key West Express ferry service (4 hours) that runs from Ft Myers.
Overall, Grecian Rocks is the 20th most popular snorkel dive spot of all 40 snorkeling dives in the Florida Keys.