Black Sea at a glance
- 1,300 maverage depth
- 1,717 mmedian depth
- 2,666 mmaximum depth
- 419,500 km²water area
Black Sea is a sea. Inside its outline the GEBCO grid has about 419,500 km² of water, with an average depth of about 1,300 m (the middle value is 1,717 m) and a maximum of 2,666 m, found at 42.20° N, 35.29° E.
Open the map at the deepest cell and tap to read the depth.
How deep is each part of the Black Sea?
The bar splits the Black Sea's water by depth. Each colour is a depth band, and the shares add up to 100%.
- 0 to 200 m: 26.3%
- 200 to 1,000 m: 9.4%
- 1,000 to 4,000 m: 64.3%
- 4,000 to 6,000 m: 0%
- below 6,000 m: 0%
Named features near the deepest point: Danube Canyon (444 km), Eratosthenes Seamount (976 km), Herodotus Basin (1,206 km), Calypso Deep (1,366 km).
The Black Sea if sea level dropped
The slider on the map lowers the sea in steps. This table shows how much of the Black Sea's water would be land at each step.
| Sea level lowered by | Becomes land | Share of its water |
|---|---|---|
| 10 m | 7,755 km² | 1.8% |
| 20 m | 18,061 km² | 4.3% |
| 50 m | 52,942 km² | 12.6% |
| 80 m | 83,353 km² | 19.9% |
| 120 m | 102,433 km² | 24.4% |
| 200 m | 110,288 km² | 26.3% |
| 500 m | 124,534 km² | 29.7% |
| 1,000 m | 149,726 km² | 35.7% |
| 2,000 m | 273,596 km² | 65.2% |
| 3,000 m | 419,500 km² | 100% |
| 4,000 m | 419,500 km² | 100% |
| 6,000 m | 419,500 km² | 100% |
A simple bathtub model: it lowers the sea everywhere by the same amount and does not simulate how water would really drain.
Nearby seas
- Sea of Azov average depth about 9 m
- Sea of Marmara average depth about 319 m
- Aegean Sea average depth about 306 m
- Sea of Crete average depth about 696 m
- Caspian Sea average depth about 235 m
- Ionian Sea average depth about 2,122 m
Nearest by the centre of each outline. All oceans and seas
Frequently asked questions
How deep is the Black Sea?
On average about 1,300 m in the GEBCO grid (the middle value is 1,717 m). The deepest cell inside its outline is 2,666 m, at 42.20° N, 35.29° E.
How big is the Black Sea?
About 419,500 km² of water inside its Natural Earth outline, counted from the grid cells that are below sea level.
How much of the Black Sea would be land if sea level dropped?
With the sea 10 m lower, about 7,755 km² (1.8%) of its water would be land. At 6,000 m lower, 100% would be. This is a simple bathtub model that lowers the sea evenly everywhere.
Data: depths from the GEBCO_2026 grid, statistics worked out inside the Natural Earth outline of the sea. See data sources and licences. The GEBCO Grid should NOT be used for navigation or for any other purpose involving safety at sea.