The world's oceans with many kilometers of water contain a lot of secrets and mysteries. This book is about the most amazing and inexplicable phenomena in the seas and oceans. Sunken continents await you - Lemuria and Antlantis, the mysteries of Easter Island, the mysteries of Arctida, ocean monsters and unidentified underwater objects, mysterious voices from the abyss, the Bermuda Triangle, treasures of sunken ships, deep depressions and ocean currents. The fascinating style of presentation and the illustrations contained in the book will give you pleasure while reading the book. Explore and travel with us!