Do all know that the unidentified flying objects are not only flying but also diving and floating? Moreover, on our planet found out the places of their submarine and surface basing. How constantly are they here or arrive "in a business trip" from other planets or artificial flying cities? What do they do under water and as seamen react on it? Is there submarine civilization of new-comers? About it tell in to the book Vladimir Ажажа and Evgeny Литвинов, in the past офицеры-подводники.A book is created by two authors, part of text is presented to the readers on behalf of Vladimir Ажажи, other part - on behalf of Evgeny Литвинова.