Diving in Bulgaria

Budget Black Sea wreck diving from Sozopol to Cape Kaliakra: shallow Soviet and WWII hulls, a sunken Tu-154 jet, and a sharp summer thermocline.

Last updated May 2026

Best diving areas in Bulgaria

Bulgarian recreational diving works the top 40 m of the Black Sea: 18-30 m wrecks accessible to Open Water divers, plus shallow rocky reefs, swim-throughs, and a handful of seasonal seahorse and Galata reef shore dives. The basin is brackish at around 17-18 ppt, cold below the summer thermocline, often murky, and biologically thinner than the Mediterranean. The industry is small and seasonal (April to November), running on a local-club and family-business scale. Three coastal regions carry the country.

The southern coast around Burgas Province packs the widest variety into the shortest distance. Sozopol concentrates the largest cluster of operators, the Centre for Underwater Archaeology, and most of the named sites. The Pioneer at 18 m, Bulgaria's first deliberately sunk artificial-reef wreck, opens to Open Water divers and is the area's signature dive; the Mopang WWI-era ship at around 27 m off Burgas and the Rodina cargo at 30-43 m off Cape Kolokita extend the wreck ladder for Advanced Open Water and deeper. Shallow shore sites like Seahorse Alley (7 m), the Goat Cave cavern at Sveti Ivan Island (15 m), and the Underwater Stone Forest at 17 m round out the OW-level scene.

The centre-north around Varna Province is the wreck-and-reef hub with the country's headline aircraft dive. The Tupolev 154 LZ-BTJ, the personal jet of former communist leader Todor Zhivkov, was sunk in 2011 at 22 m about half a nautical mile offshore from St Konstantin and Helena. At 49 m long with a permanent surface mooring listed in the National Maritime Navigational Book and a penetrable interior, it is one of the only Bulgarian sites set up for repeat structured diving. Galata, south of Varna city, is the macro-photography stretch with the Seahorse Garden at 7 m. Kranevo, 30 km north of Varna airport, holds the country's single indexed dive site, the Kranevo Cargo Wreck at 18 m.

The far north (Dobrich Province, with Tyulenovo, Cape Kaliakra and Shabla) is topography-driven diving. Cape Kaliakra rises 70 m vertically above the sea and forms a 2.5 km headland; underwater the cliffs invert to shallow reefs strewn with fallen boulders and surge-eroded swim-throughs, and some sites have partially flooded caves once inhabited by the now-extinct Black Sea monk seal. Most dives here are boat-access and require permits inside the protected zone. Tyulenovo north and south are the entry-level cavern sites at 7-12 m, with shore access from the village. A Bulgaria-resident community judgement, repeated in forum posts, holds that the northern end of the coast tends to be better than the south.

Planning your diving trip to Bulgaria

Bulgaria has no single dominant national recreational-diving federation. The CMAS-affiliated Federation Bulgare de Pêche Sous Marine in Sofia covers spearfishing rather than recreational training, and practical certification runs almost entirely through PADI and SSI. Centres do not require a federation card; insurance and certification gates are imposed by the operator (typically Open Water minimum plus one warm-up dive before any wreck programme). International cards are accepted across the coast.

Burgas Airport (BOJ) is the south-coast hub closest to Sozopol and Nessebar operators. Varna Airport (VAR) covers the centre-north, with the Tu-154 site, Galata, and Kranevo all within roughly 30-40 minutes' drive. Sofia Airport (SOF) is the main international gateway but sits 6-7 hours from either coast. Coast-internal driving is light: Sozopol to Burgas around 35 minutes, Varna to Kranevo about 30 minutes, Burgas to Varna roughly two hours. The currency is the Bulgarian Lev, pegged to the Euro at around 1.96 BGN/EUR; most operators quote in EUR. English is reliable at coastal centres, with German and Russian common.

A boat dive runs around 55-65 EUR, a two-tank wreck day around 90 EUR, and a wreck supplement around 35 EUR on top of a normal dive. PADI Open Water typically runs 550 EUR, materially below Mediterranean training prices. The hyperbaric chamber network is not openly catalogued, with the Varna Naval Hospital the most-cited reference; operators maintain current contact lists. Protected-zone permits apply at Cape Kaliakra most prominently, and the Tu-154 site uses a dedicated mooring listed in the National Maritime Navigational Book to keep boat traffic clear. Removing or disturbing artefacts from any underwater archaeological site is forbidden under Bulgarian heritage law, with the Centre for Underwater Archaeology in Sozopol as the governing authority. The practical season is April to November, with high season July-August.

Why Dive Bulgaria

What makes this country a world-class diving destination.

  1. 1
    Three-hub wreck portfolio

    Pioneer 18 m, Mopang 27 m, Rodina 30-43 m, Tu-154 jet 22 m, Kranevo cargo 18 m

  2. 2
    Brackish Black Sea basin

    Salinity around 17-18 ppt, no corals, thin biology, anoxic below 150 m

  3. 3
    Sharp summer thermocline

    22-26 C surface drops to about 15 C below 10-12 m even in mid-summer

  4. 4
    Budget European diving

    Boat dive 55-65 EUR, two-tank wreck day around 90 EUR, PADI Open Water 550 EUR

  5. 5
    Niche operator scene

    Family-scale PADI and SSI centres, no resort chains, season runs April to November

  • *Tupolev 154 LZ-BTJ, the personal jet of communist leader Todor Zhivkov, sunk 2011 at 22 m
  • *Pioneer at 18 m, Bulgaria's first artificial-reef wreck, sunk 2008 in Sozopol
  • *Rodina cargo ship, mined in 1941, lying at 30-43 m off Cape Kolokita
  • *Kranevo Cargo Wreck at 18 m, the country's single indexed dive site
  • *Seahorse colonies at Galata reef and Sozopol's Seahorse Alley

Frequently Asked Questions

Is diving in Bulgaria worth it?
It depends on what you came for. Bulgaria offers a coherent shallow-wreck portfolio at 30-65% of Mediterranean prices, a unique aircraft dive in the Tu-154 jet, and a quiet exploration feel that more developed European destinations have lost. It is not a stand-alone destination for someone flying in to dive, and it cannot match the Mediterranean for biology, visibility or warm water. The honest fit is divers already on a Black Sea holiday adding a few dives, budget-conscious wreck specialists, or curious divers wanting a quiet, lightly trafficked coast. A 2025 trip report from Sozopol summed it up as 'not going to rival the better known European destinations' but with a 'feeling of exploration diving in areas not too well known'.
How cold is the Black Sea for diving in Bulgaria?
Surface water reaches 22-26 C in peak summer (July-August), but a sharp thermocline at 10-12 m drops temperatures to around 15 C even in mid-summer. Deeper wrecks at 25-40 m can sit at 8-10 C in August. Surface conditions in May and late September run cooler, around 16-20 C. A 5 mm wetsuit is the minimum for July-August surface dives, with semi-dry or 7 mm essential for any dive going through the thermocline. Drysuits are recommended below 20 m and for shoulder-season diving. There is no recreational winter season.
What can you actually see diving in the Black Sea?
The Black Sea is brackish at around 17-18 ppt salinity, less than half Mediterranean, which means no corals, few large fish, and no big-fauna headliners like grouper or barracuda. What you do see: zebra mussel colonies coating every wreck and hard structure, rapa whelks feeding on the mussels, gobies and anthias on rocky reefs, brown meagre inside wreck holds, long-snouted seahorses at Galata and Sozopol's Seahorse Alley, and amphibious water snakes hunting fish on northern shore dives. The biology is thin compared to the Mediterranean, but the wrecks make up for it with an unusual visual character.
Can you dive shipwrecks in Bulgaria as a beginner?
Yes, on several headline wrecks. The Pioneer at 18 m off Sozopol was sunk specifically as an artificial reef in 2008 and is accessible to Open Water divers. The Tu-154 jet at 22 m off St Konstantin/Helena is technically within OW range, though most operators prefer Advanced Open Water for the penetration profile. The Kranevo Cargo Wreck at 18 m off the Varna coast is OW-friendly. Deeper wrecks like the Rodina at 30-43 m and the Mopang at around 27 m require Advanced Open Water and, for the Rodina, deep-specialty experience. Most operators require at least one warm-up dive before any wreck programme.
Is the Black Sea anoxic, and can you dive that part?
The Black Sea below roughly 150 m is genuinely anoxic, devoid of dissolved oxygen, which is why deep-water archaeological wrecks survive there with intact wood, rope and even leather. The University of Southampton's Black Sea MAP project documented Roman, Byzantine and Ottoman shipwrecks at those depths in Bulgarian waters, including a 2,500-year-old Greek wreck described as the world's oldest preserved. None of those archaeological wrecks are reachable on recreational scuba. Recreational diving in Bulgaria works the top 40 m of the water column, where preservation conditions are ordinary and the famous deep wrecks are simply unreachable on open-circuit air.
When is the best time of year to dive in Bulgaria?
June through September is the practical window, with August often cited as the clearest month. May and early June can be cooler and less stable but tend to have better visibility before the late-summer plankton bloom. Late August into September is the warmest stretch on the surface but is the plankton-bloom peak, with visibility sometimes dropping to 2-3 m. Operators typically run from late April to October-November, weather permitting. There is no winter recreational season; the coast is too cold and too stormy.
Are there marine reserves or permits required to dive in Bulgaria?
There is no national diving permit. Specific protected zones do impose restrictions: the Cape Kaliakra protected zone in Dobrich Province requires governmental permission for boat-access dives, the Ropotamo Natural Reserve near Primorsko gates access to Maslen Nos and Seal Cave, and Strandzha Nature Park covers a large protected area in the south where standard operator practice applies offshore. The Centre for Underwater Archaeology in Sozopol is the national authority on cultural heritage, and removing or disturbing any artefact from any underwater archaeological site is forbidden under Bulgarian heritage law. Most recreational sites have no permit requirement at all.

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