scuba diving
diving in marathon, florida

Marathon Diving

USA Marathon dive guide
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Scuba diving in Marathon

Marathon, also known as "The Heart of the Keys", is on the mid-point of Florida Keys' chain of islands. Marathon diving sites suit all levels of expertise. Its marvelous wrecks, drop offs and reef sites such as Sombrero Reef and Looe Key are home to plenty of aqua life like lobsters, stingrays, nurse sharks and the magnificent 7000 years old soft corals. Most dive sites are just minutes away from shore.

Always dive according to your level of training.
Never enter the water without checking with Marathon dive centers for safety, additional information, level required for each dive site and without being accompanied by a professional.
All the information provided is purely informative for our readers and shouldn't be used as is to plan your immersion.

Average annual temperature: Between 26°C and 30°C. (77° F and 86° F)
Average water surface temperature: Between 21° C and 25° C (70°F and 78°F)
Visibility often averaging: Visibility is between 100 feet (30 meters)
Coldest time: January
Warmest time: July
Possible to dive all year round.

Marathon is one of the most famous diving destinations. It has the largest live coral reef system in the Florida Keys. Marathon dive sites vary from deep and shallow reefs to artificial and historical wrecks. A good number of the dive sites are only minuets off shore and they are home to plenty of beautiful tropical sea life like schools of silversides, barracuda, Spanish and spiny lobster as well as angelfish, moray eels, jacks and nurse shark. You will have the chance to see many kinds of corals growing in the area with its beautiful colors like brain, elkhorn, staghorn and fire coral.

Some of Marathon dive sites.

Adolphus Busch is an artificial dive site. A ship was deliberately sunk in the area to form this artificial reef at a depth of 85 - 110 feet (26 - 34 meters). The ship is in great condition, intact and upright. Its holes are easy to swim through and this site is great to observe sea life such as jewfish.

Coffins Patch is a series of reefs named after a ship that sank carrying a cargo of coffins in this area. It is at a depth ranging from 10 to 25 feet (3 to 8 meters). The reef is home to some rare pillar coral and other coral species. Vast amounts of sea life inhabit the reef like schools of French grunts and mutton snapper as well as Spanish lobster and spiny lobster. Angelfish are also spotted in this location. You will find some of the largest brain coral that can be seen in the Keys.

Delta Shoals is an excellent site for both snorkeling and scuba diving. It is at 10 - 25 feet (3 - 8 meters) deep. You can find many sunken ships on this reef. The reef offers a great opportunity to divers to see many kinds of corals like elkhorn, brain, and star coral heads. Many aqua life kinds found home on this site such as spiny lobster, grunts, moray eels, jacks and nurse sharks.

HMS Looe is a good snorkeling area marked by mooring buoys. It is one of the most recommended dive sites. The reef is at depth range from 20 to 25 feet (6 to 8 meters). A British man of war called HMS Looe sank in this area at 1744 forming this beautiful reef. Not much of the wreck can be seen now but it is still a great site for beginner divers. Many kinds of corals have grown on the wreck. The reef makes a good home to great numbers of spiny lobsters.

Looe Key Reef is at a depth of 15 to 105 feet (5 to 32 meters). It is a great area for photography by its large overhangs. The site is marked by 70 mooring buoys and is home to large populations of spiny lobsters, barracuda and jacks. Looe Key Reef is famous for its 7000 years old corals.

Sombrero Reef is a great site for snorkelers and divers of all levels too. It is one of the largest and most magnificent coral reefs in the area, home to the most beautiful and varied corals in the Middle Keys. Gorgonians, brain, finger and lettuce corals can be seen as you dive deep. Schools of colorful tropical fish are also seen here such as southern stingrays, large barracuda and nurse sharks.

Thunderbolt is an advanced dive site at depth ranging from 85 to 120 feet (26 to 37 meters). A ship called Thunderbolt sank in this area and to date it's intact and easy to explore. It became home to a variety of encrusting sponges, hydroid and soft corals. Groups of silversides inhabit the area. The wreck provides refuge to many kinds of sea life such as large angelfish, jacks and barracuda.

Duck Key Wreck is also called the Boiler Patch. The wreck lays at 25 feet (8meters) deep. It is home to many sea creatures and many kinds of coral heads.
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