Why in news?
In early June 2026 Ukrainian officials claimed to have struck ships carrying illegal cargoes in the Sea of Azov. The incident drew attention to this shallow inland sea, which has been at the centre of geopolitical tensions between Russia and Ukraine since the annexation of Crimea and the conflict in eastern Ukraine.
Background
The Sea of Azov is an inland sea in Eastern Europe bordered by Ukraine to the northwest and Russia to the southeast. It forms the northern extension of the Black Sea and is connected to it by the narrow Kerch Strait between the Crimean Peninsula and the Taman Peninsula. With a length of about 340 km and a width of 135 km, the sea covers around 37,600 square kilometres. It is the worldโs shallowest sea, with a maximum depth of roughly 14 metres.
Physical and ecological features
- River inflows: The Don and Kuban rivers deliver more than 90 percent of the seaโs freshwater and silt. Other rivers such as the Mius, Berda and Yeya also contribute. Heavy sediment deposition creates sandbars and spits, notably the 113โkm long Arabat Spit that separates the sea from the marshy Syvash lagoons.
- Shallow waters: Because of its modest depth, the Sea of Azov warms quickly in summer and freezes in winter. Ice forms along the northern shores from late December to early March. Currents flow counterโclockwise along the coasts, and tides are negligible.
- Low salinity: The large volume of river water makes the sea almost fresh in places like the Taganrog Gulf. The Syvash lagoons, however, are hypersaline due to high evaporation.
- Rich marine life: The seaโs nutrients support more than 300 species of invertebrates and about 80 species of fish, including sturgeon, herring, anchovies, perch and mullet. Its shallowness allows sunlight to penetrate the entire water column, encouraging photosynthesis and productivity.
- Ports and navigation: Important ports include Taganrog and Yeysk in Russia and Mariupol and Berdyansk in Ukraine. Shallow depths can hamper large oceangoing vessels, so dredging and icebreakers are required. The sea is linked to the Atlantic Ocean via the Black Sea, Sea of Marmara, Aegean Sea and Mediterranean Sea.
Geopolitical importance
Control of the Sea of Azov is strategically vital for both Russia and Ukraine because it provides maritime access to industrial regions and wheatโproducing areas. Following Russiaโs annexation of Crimea in 2014 and the opening of the Crimean Bridge across the Kerch Strait, tensions have increased over navigation rights. The recent confrontation underscores how disputes over maritime boundaries and trade routes can flare up into broader conflict.
Conclusion
The Sea of Azov may be small and shallow, but its ecological wealth and strategic location give it outsized importance. Understanding its geography helps explain why incidents in these waters attract global attention and why conserving its fragile ecosystems is vital for millions who depend on its resources.