Sevruga caviar as saltier, but it can vary depending on the origin of the fish. The caviar is packaged and sold in red tins. A rare type of caviar known as Imperial Caviar, from the Sterlet sturgeon (Acipenser ruthenus), a now nearly extinct species of sturgeon from the Caspian Sea, is sometimes incorrectly labeled as Sevruga, as well as the even rarer Golden Caviar from the albino Sterlet, the caviar being yellow in color. “Pressed sevruga caviar” can also be found, made of a blend of Osetra and Sevruga caviar that has been heated in a saline solution. Sevruga caviar Sevruga caviar
HMS Sterlet (2S) HMS Sterlet (2S) HMS "Sterlett" was a second-batch S-class submarine built during the 1930s for the Royal Navy. Completed in 1938, the boat fought in the Second World War. The submarine is one of the 12 boats named in the song "Twelve Little S-Boats". Thus far she has been the only ship of the Royal Navy to be named "Sterlet". The second batch of S-class submarines were designed as slightly improved and enlarged verions of the earlier boats of the class and were intended to operate in the North and Baltic Seas. The submarines had a length of overall, a