Revelation 16:3 in the King James Version
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.
Context
2 The first went, and poured out his bowl into the earth, and it became a harmful and painful sore on the people who had the mark of the beast, and who worshiped his image.
3 The second angel poured out his bowl into the sea, and it became blood as of a dead man. Every living thing in the sea died.
4 The third poured out his bowl into the rivers and springs of water, and they became blood.