This large encyclopaedia opens to the young readers of secret of the submarine world and his inhabitants. Here told about the habitants of depths and banks, coastline of dry spell and surface rocks, salt and fresh waters - representatives of all breadths and doomsdays! Some animals a book acquaints with that, it is impossible to meet in everyday life, even in a zoo or oceanarium. The interesting to know, what habitants of seas same "talkative", that after "electricians" are led in an ocean, where the great-grandmother of modern fishes, what submarine creature, as well as kangaroo, lives, carries a bag for children, what fish was named "after" a bird, and to what distance whole three names and great deal, other great deal!The perfectly illustrated edition with by a great number important, interesting and simply unbelievable facts will not leave indifferent neither children nor their parents.For middle and senior school age.