The oceans are full of unsolved mysteries. Its depths beckon man from time immemorial, people seek to reveal his secrets, but to this day the ocean is the most poorly studied area of ​ ​ the globe. Nobody knows exactly what is under the multi-kilometer water strata. In the unknown depths of the ocean - unusual animals, huge monsters, dangerous whirlpools, treacherous currents and deep gutters, underwater mountains and hills, corals, sunken ships and islands that have gone under water, and maybe even races unknown to science - a whole world that has yet to be discovered and studied.