<P> The Taman Peninsula has about 25 mud volcanoes, most of which are active . Their eruptions are usually quiet, spilling out mud, and such gases as methane, carbon dioxide and hydrogen sulfide, but are sometimes violent and resemble regular volcanic eruptions . Some of those volcanoes are under water, near the shores of the peninsula . A major eruption on 6 September 1799, near stanitsa Golubitskaya, lasted about 2 hours and formed a mud island 100 metres in diameter and 2 metres in height; the island was then washed away by the sea . Similar eruptions occurred in 1862, 1906, 1924, 1950 and 1952 . </P> <P> The current vertical profile of the Sea of Azov exhibits oxygenated surface waters and anoxic bottom waters, with the anoxic waters forming in a layer 0.5 to 4 metres (1.6--13.1 ft) in thickness . The occurrence of the anoxic layer is attributed to seasonal eutrophication events associated with increased sedimentary input from the Don and Kuban Rivers . This sedimentary input stimulates biotic activity in the surface layers, in which organisms photosynthesise under aerobic conditions . Once the organisms expire, the dead organic matter sinks to the bottom of the sea where bacteria and microorganisms, using all available oxygen, consume the organic matter, leading to anoxic conditions . Studies have shown that in the Sea of Azov, the exact vertical structure is dependent on wind strength and sea surface temperature, but typically a' stagnation zone' lies between the oxic and anoxic layers . </P> <P> Many rivers flowing into the Sea of Azov form bays, lagoons and limans . The sand, silt and shells they bring are deposited in the areas of reduced flow, that is the sides of the bays, forming narrow sandbanks called spits . Typical maximum depth in the bays and limans is a few metres . Because of shallow waters and abundant rivers, the spits are remarkably long and numerous in the sea--the Arabat Spit stretches over 112 kilometres (70 mi) and is one of the world's longest spits; three other spits, Fedotov Spit, Achuevsk Spit and Obitochna Spit, are longer than 30 km . Most spits stretch from north to south and their shape can significantly change over just several years . </P> <P> A remarkable feature of the Sea of Azov is the large complex of shallow lagoons called Sivash or "Rotten Sea". Their typical depth is only 0.5--1 metres with a maximum of 3 metres . They cover an area of 2,560 square kilometres (990 sq mi) in the northeastern Crimea which is separated from the sea by the Arabatsk Spit . North of the spit lies the city of Henichesk (population 22,500) and south of it is the Bay of Arabat . Sivash accepts up to 1.5 km of Azov water per year . Because of the lagoons' wide extent and shallowness, the water rapidly evaporates, resulting in the high salinity of 170 on the practical salinity scale (i.e. 170 psu). For this reason Sivash has long had an important salt - producing industry . </P>

Along the sea of azov which of these languages are most likely spoken