The Third Vial
” 4 And the third angel poured out his vial upon the rivers and fountains of waters; and they became blood.
5 And I heard the angel of the waters say, Thou art righteous, O Lord, which art, and wast, and shalt be, because thou hast judged thus.
6 For they have shed the blood of saints and prophets, and thou hast given them blood to drink; for they are worthy.
7 And I heard another out of the altar say, Even so, Lord God Almighty, true and righteous are thy judgments.”
(Rev 16:4-7 KJV)
The Second Vial
“And the second angel poured out his vial upon the sea; and it became as the blood of a dead man: and every living soul died in the sea.” (Rev 16:3 KJV)
The second vial turns the sea to blood of the dead, killing every creature in the sea. Some believe that the sea turns the color of blood, while others proclaim it is literal blood. It is very specific as to what kind of blood it is: blood of a dead man. It could be that the blood of those killed has run into the sea, or they died in the sea. Since it uses the term ‘as’, it could be figurative. I believe it is literal, just like in Exodus.