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Greece

Drakos–Selinitsa (Agios Dimitrios)

  • Max depth56 m
  • CertificationFull cave
  • SpecialSidemount

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What it looks like

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Videos and posts

From other divers, via YouTube, Instagram and Facebook. They only load when you click; after that, Google's or Meta's privacy rules apply.

Videos shown with permission from the channel @addicted2h2o ↗

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Other people's footage, not advice: how someone else dives here says nothing about what suits your team. Dive within your training.

The dive

Behind the entrance waits a large antechamber with a huge stalagmite, proof that this part once lay above the sea.

The first ~150 m are narrow and twisting, with sharp rock: you keep adjusting your position to get through without damaging your gear or the cave. In 2019 the old line was cut in many places and the team had to rejoin it to go on safely (Grafas).
The system carries rain and snowmelt from the mountains to the sea: in the rainy period of autumn and winter, and in spring until the snowmelt stops, poor visibility and strong outflow make diving impossible. Grafas gives the end of summer to December as the window, if there is no heavy rain then.
Deep and long: the deepest section goes to -56 m and the connection with Selinitsa is a narrow vertical chimney. The exploration dives took almost three hours, more than 1 km in, with 4–5 cylinders per diver: plan gas, deco and trimix for a long dive.
Profile and sections

Behind the entrance waits a large antechamber with a huge stalagmite, proof that this part once lay above the sea. After the first 150 m the scenery changes: fewer side passages, clearer water and, instead of sharp rock, a sandy floor between walls smoothed by the water. About 250 m from the entrance there are gours with rare helictites. A light current towards the sea helps you on the way out, and the rocky floor keeps the visibility good (Grafas).

Drakos means 'dragon': in winter, when high flow, bad weather and a sea about a metre higher come together, water sprays far out of the entrance with a loud roar. The spring is the outflow of Selinitsa or Katafygi ('refuge'), a dry river cave on the shore. German, British, Czech and Greek divers explored both caves between 1980 and 1985; from 2000 the Greek group SPELEO took up the work and in November 2004, after five years and 25 expeditions, found the last 200 m of the connection. The whole system is ~4 km long (SPELEO; showcaves.com: 3.5 km), the fourth-longest in Greece.

Practical: the dry Selinitsa cave can be visited free and without a guide; bring a torch. showcaves.com advises staying within the first 300 m.

Depth and profile
Two entrances at -10 m (NPC 1982: -6 m) into a large antechamber. The first ~150 m are narrow and twisting; then passages 5–6 m wide drop over ~150 m to a main junction at -37 m, and to the north-west the cave rises again to -25 m at ~450 m from the sea (Grafas). The Drakos part has 1,232 m surveyed, on three levels around -10, -18 and -28 m; the deepest point is at -56 m. The connection with Selinitsa, a narrow vertical chimney, lies at -28 m (German Wikipedia).
Configuration
Narrow, twisting first 150 m: sidemount is the obvious choice. The exploration dives (almost three hours, more than 1 km) used drysuits, scooters, trimix and 4–5 cylinders per diver.
DPV: DPV possible (estimate)
The exploration teams used scooters to reach the far sections; the first ~150 m are narrow.
Gas
Trimix from 45 m
Who can dive where
  • CaveAt least Full cave
  • Whole caveConfigurations: Backmount / twinset / Sidemount / CCR
  • Whole caveGoes down to 56 m (trimix or deco may be needed) · doesn't decide who may dive
  • Whole caveExperienced divers only · doesn't decide who may dive
Experienced diversDepends on water level or swell

This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.

How to get there

The underwater entrance, the Drakos spring, lies just off the coast at -10 m, ~1.5 km from Agios Dimitrios on the road to Trachila in the Messinian Mani and ~500 m from the land entrance of Selinitsa, which opens on the shore 2 m above the sea and is free to visit. No dive centre offers cave dives here: teams dive it self-sufficient. No permit rule is known.

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Around Drakos–Selinitsa (Agios Dimitrios)

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Sources, sharing and disclaimer

Current conditions

Visibility, flow and water levels change quickly. Right before your dive, check what other divers report:

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Certification requirements, configurations and trimix depths are estimates for planning. Always check them locally and dive within your training. Compiled from web research (cave pages of the Greek teams T2B, Grafas Diving and Addicted2H2O, wannadive, Wikipedia, Greek news reports 2015–2026, summaries of diving laws 3409/2005 and 4688/2020; Sept 2026); for Rhodes the dive centres Lepia and DiveMed, Scuba Hellas, Tribloo and Duikersgids (Oct 2026); Lepia Dive Centre (message, Oct 2026); for Crete and the Ionian Islands Grafas Diving, Addicted2H2O, divernet (Martyn Farr, 2018), showcaves.com, cretanbeaches.com and the pages of the dive centres Aquatic, Achilleon, Blue Adventures and Eurodivers (Oct 2026). Sea caverns at Lindos and on Kefalonia and Ithaca from the pages of Lepia and Aquatic (Oct 2026). For Paros the pages of Paros Divers (amphitritecave.com, parosdivers.com), T2B, Addicted2H2O and the municipality of Paros; for Drakos–Selinitsa in the Messinian Mani Addicted2H2O, Grafas Diving, showcaves.com, the German Wikipedia and the journals of the Northern Pennine Club (1982) and Cambridge Underground (1983) (Nov 2026). The springs of Polydrosos, Kolethra and Ladonas from Addicted2H2O (also by e-mail, Nov 2026), Grafas Diving, allovergreece.com, Amazing Evia and travel.gr (Nov 2026). Pins from T2B, wannadive, showcaves, OpenStreetMap or Wikipedia (see each site); ~ = estimate. Rules change — check locally.