The book of Revelation is the account of the last days and of Armageddon. It is available to us so that we can study and understand the events of our day and be watchful and ready for when Christ comes again.
And I heard a great voice out of the temple saying to the seven angels, Go your ways, and pour out the vials of the wrath of God upon the earth.
2 And the first went, and poured out his vial upon the earth; and there fell a noisome and grievous sore upon the men which had the mark of the beast, and upon them which worshipped his image.
NOW GO HERE
(the seas are dying -- and all the life in them)