French writer Georges Blon is the author of the most popular series of books on sea travel and discoveries "The Great Secrets of the Oceans" ("The Great Hour of the Oceans"). The new, revised edition in Russian is published in two volumes and is provided with extensive reference material, including maps, dictionaries of names, marine terms and names of ships and aircraft. The second book includes stories about three exceptionally peculiar waters of the World Ocean. This is the Mediterranean Sea, the Polar Seas and the Caribbean, or Filibuster, Sea.