Kefalonia, the largest of the Ionian Islands has typical Greek rocky coastline with crystal clear water – a perfect late summer freediving holiday destination. It also boasts 17 caves in one area 5 of which contain lakes, albeit with various degrees of accessibility or suitability for swimming.

Freediving The Caves of Kefalonia
Freediving The Caves of Kefalonia

Kiri and I dived several untouched beaches and were pleasantly surprised to find a few rare giant mussels, Pinna Nobilis, (found only in the Mediterranean Sea). It is one of the largest bivalves in the world, growing to 120cm long.

Freediving The Caves of Kefalonia - Pinna Nobilis : Rare giant mussel
Freediving The Caves of Kefalonia – Pinna Nobilis : Rare giant mussel

After some scenic coastal dives we met up with Aquatic World, a friendly shop on the islands east coast, who provided us some local geographical information and kindly lent us some lead!

Freediving The Caves of Kefalonia
Freediving The Caves of Kefalonia

We told them that NoTanx specialized in underground lake diving (Phreatic Divers), and that we were interested in the islands hidden, secret labyrinth of phreatic tunnels. Water is sucked into huge sink holes from the Ionian Sea on the west side of the island, via huge karst conduits and expelled in the Bay of Sami on the east of the island. Although just 10miles on land this journey takes the water over 2 weeks to filter through these huge underground systems.

phreatic (adj) relating to or denoting underground water in the zone of saturation (beneath the water table)

They pointed us in the direction of several of the cenotes pits that have resulted from the collapse of the limestone bedrock, exposing the water beneath, very similar to those found in the Yucatán peninsula of Mexico. Here is what we uncovered…

Melissani Cave

Melissani cave is one of these cenotes, it was discovered after a collapsed during the 1953 Ionian Earthquake. Tourists can take a short trip by paddle boat through both sections of the lake; one open to the sunlight, the other dark and mysterious despite the incandescent floodlight flickering behind a mound of fallen roof rubble.

As it is a famous tourist site; diving is forbidden. Despite this, we persevered and managed to arrange a meeting with the Mayor of Kefalonia, who, after some negotiating, gave us permission to freedive in exchange for photographs.

Freediving The Caves of Kefalonia
Freediving The Caves of Kefalonia

Returning to the cave, the crystal turquoise of the water almost takes your breath away, as does the 14°c / 57°f water temperature. The sudden change in temperature forms a permanent mist below the surface of the water at about 8meters.

The chamber drops off quickly to 30m with water so clear it feels like flying. The visibility is stunning, we could almost see the entire length of the 50m long 1st chamber!

Freediving The Caves of Kefalonia - Melissani Lake is Huge!
Freediving The Caves of Kefalonia – Melissani Lake is Huge!

The splendor of the main chamber is awe-inspiring: thousands of years ago the cave was dry, leaving huge speleothems (stalactites & stalagmites). Surprisingly, there is very little life in the water considering the amount of sunlight falling on the open section. Eels, however, seem to thrive there, and are not afraid of divers.

Freediving The Caves of Kefalonia
Freediving The Caves of Kefalonia
Freediving The Caves of Kefalonia - A stalactite in the dark
Freediving The Caves of Kefalonia – A stalactite in the dark

Karavomilos

The water runs from Melissani lake and flows into the sea via an innocent looking pond, thriving with life in every direction. As we are not permitted to hang around within the pond (as it is a unique ecosystem), we swim through the lake to investigate a small crack in the surrounding rock.

Freediving The Caves of Kefalonia
Freediving The Caves of Kefalonia

The crack turns out to be the entrance to an amazing cave system. The first 2 chambers accessible to surface dwellers. “Fun” doesn’t begin to describe this dive. This dive was the single best phreatic dive either of us have done! We exclusively use Anchor Dive Lights so we always have plenty of light to explore and take photos. The water is stunningly clear (still cooler than the Sea) with no danger of losing visibility due to the consistent exiting current.

Freediving The Caves of Kefalonia
Freediving The Caves of Kefalonia

Caves on the list for next time

To assess the possibilities of other sites called for some cave hunting, and we located 2 of the remaining 3. Both of which we are planning on diving during our return visit in September 2016.

Freediving The Caves of Kefalonia
Freediving The Caves of Kefalonia

Agalaki Cave is a vertical access cave that was easy to locate and awe inspiring to view, it has 2 large lakes deep underground that have rarely been swum in let alone dived.

Zervati is the Gem in the Kefalonian Cave List – eerily like a Mexican Cenote the jungle leading down to the crystal blue waters is a joy unto itself.

Freediving The Caves of Kefalonia
Freediving The Caves of Kefalonia

By far the smallest “lake” it drops down quickly to 10m, leading to a tunnel not suitable for apnea exploration, the entrance is well worth of a dive.

Freediving The Caves of Kefalonia
Freediving The Caves of Kefalonia

What You Need to Know

How to Get There

Flying to Kefalonia is pretty easy from most major cities in Europe including mainland Greece and the UK.  There is an airport on the island that caters to charter flights throughout the summer.

When to Go

Probably the best months to visit Kefalonia are May, June, September and October. Prices for flights and hotels are cheaper with the weather perfect for diving and sightseeing.

Currency

Kefalonia is part of Greece and the currency used in the Euro.

Phreatic Freediving With NoTanx

NoTanx are now running Phreatic Diving Courses in the UK as well as adventurous diving around the world.  Visit NoTanx.com for more information.

Marcus Greatwood

Working with Loic Leferme & coaching numerous national & World Records (inc. Herbert Nitsch 214m in 2007) helped me develop a complete training system.

The techniques I teach are used in a huge variety of situations as well as enjoying the Oceans such as athletes, scuba divers, golfers & martial artists. Always start with Breathing & Relaxation.Efficiency is found through Awareness.

Our club, based on this system (NoTanx), has grown exponentially since 2000. Showing a huge appetite for enjoyment of being underwater, as well as developing good technique and personal well being.

Recently we have developed Phreatic Diving Techniques in conjunction with Caving to access lakes deep underground.

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