Sharks are found in all seas and are common to depths of 2,000 metres (6,600 ft). They generally do not live in freshwater although there are a few known exceptions, such as the bull shark and the river shark, which can survive and be found in both seawater and freshwater.
notable works. Pyotr Ilyich Tchaikovsky, Tchaikovsky also spelled Chaikovsky, Chaikovskii, or Tschaikowsky, name in full Anglicized as Peter Ilich Tchaikovsky (born April 25 [May 7, New Style], 1840, Votkinsk, Russiaâdied October 25 [November 6], 1893, St. Petersburg), the most popular Russian composer of all time.
(1868-1918). Nicholas II was the last emperor, or tsar, of Russia, serving from 1894 to 1917. Nicholas, his wife, and their five children were killed by the Bolsheviks, members of a revolutionary group (led by Lenin) who seized control of the government in Russia during the October Revolution (see Russian Revolution) of 1917.