Why the Black Sea Surprises Every Diver
Scuba diving in the Black Sea at Constanța, Romania defies most people's expectations. No dangerous sharks, no strong currents — instead, you find historically significant wrecks, endemic marine life, and a distinct underwater silence. The Black Sea is one of the most oceanographically unusual bodies of water in the world: low salinity (17‰ vs 35‰ in the Mediterranean), no dangerous species, with strictly local biodiversity.
ALPHAMARIN Dive Center, the only SSI-authorized dive center in Constanța, has been organizing Black Sea guided dives and courses for over a decade. We are located at Bulevardul Regina Elisabeta 5, next to Constanța Casino — minutes from the best dive sites in the area.
Dive Sites Near Constanța
Dobruja Shipwreck — 32 m depth
The Dobruja wreck is the most iconic dive site in Romanian Black Sea waters. An approximately 80-meter vessel that sank in the first half of the 20th century, now fully colonized by mussels and populated by horse mackerel, gobies and crabs. Visibility reaches 10–12 m in season. Requires Advanced Open Water Diver certification or equivalent.
Rocky Reefs 3–18 m
The rocky formations off Constanța's coast are perfect for divers of all levels. At 5–8 m: dense goby schools, flounder camouflaged in sand, thick mussel colonies. At 15–18 m: sea bass, stingrays, spider crabs. These sites are used for both Open Water Diver courses and guided diving trips.
Night Diving
At night, the Black Sea transforms. Phytoplankton bioluminescence lights up every movement. We organize night dives for divers with minimum Open Water Diver certification.
The Black Sea's Unique Characteristics
- Salinity 17‰ — less buoyancy than the Mediterranean; adapted weight belt
- No dangerous sharks — the only elasmobranch present is the spiny dogfish (Squalus acanthias), completely harmless
- Visibility 5–15 m — varies with season and wind; best after calm periods
- Temperatures — 22–26°C at surface in summer, 10–14°C at 20 m depth
- Anoxic layer — below 150–200 m water contains no oxygen; all diving is done in the upper oxygenated zone (max 40 m)
Black Sea Marine Life at Constanța
Fish
- Horse mackerel (Trachurus mediterraneus) — massive schools, spectacular for photography
- Black Sea round goby (Neogobius melanostomus) — present at any depth
- Turbot (Scophthalmus maximus) — camouflaged in sand, hard to spot without a guide
- European sea bass (Dicentrarchus labrax) — at depth, solitary
- Common stingray (Dasyatis pastinaca) — Black Sea's typical ray, harmless
Invertebrates and Other Species
- Mediterranean mussel (Mytilus galloprovincialis) — massive colonies on any hard structure, including wrecks
- Shore crab (Carcinus aestuarii) — most active at night
- Moon jellyfish (Aurelia aurita) — present in summer, completely harmless, spectacular in photographs
- Bottlenose dolphin (Tursiops truncatus) — frequently seen at the surface near the boat
Diving Season and Conditions
Best Season: July–September
Warm water (22–26°C at surface), maximum visibility (10–15 m), frequently calm seas. May–June and October are excellent for visibility (less plankton) but water is cooler (16–20°C). In winter we organize dives for divers with 7mm wetsuits or dry suits.
Recommended Equipment
- July–August: 3mm wetsuit at surface / 5mm for depths below 15 m
- May–June, September–October: full 5mm wetsuit
- November–April: 7mm wetsuit or dry suit
All equipment is included in ALPHAMARIN packages — no need to bring your own.
How to Start Diving in Constanța
- No experience: SSI Try Scuba (€60) — first dive at 3–5 m, no prior certification, 2–3 hours
- First certification: SSI Open Water Diver — internationally recognized, valid in 100+ countries, max 18 m depth
- Certified diver: Book a guided dive in the Black Sea
FAQ — Scuba Diving in Constanța
Is the Black Sea dangerous for scuba diving?
No. The Black Sea has no dangerous sharks, strong currents, or aggressive species. All ALPHAMARIN dives are led by SSI-certified instructors with extensive local experience.
Can I dive without certification?
Yes, through the SSI Try Scuba program — supervised introduction at 3–5 m depth, no prior experience needed, with an instructor. Costs €60, takes 2–3 hours.
What is the minimum age to start diving?
From 10 years old with SSI junior courses. Standard Open Water Diver certification from age 15.
How many dives per day?
Typically 2 dives per day (morning and afternoon), with the required surface interval. Full schedule available at booking.
Where are you located?
ALPHAMARIN Dive Center: Bulevardul Regina Elisabeta 5, Constanța, next to Constanța Casino. Phone: +40.768.888.529. Email: office@dive-center.ro.