“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.”
King James Version (KJV)
16:3 The second poured out his phial upon the sea - As opposed to the dry land. And it become blood, as of a dead man - Thick, congealed, and putrid. And every living soul - Men, beasts, and fishes, whether on or in the sea, died.
Re 16:3 THE SECOND VIAL. And the second angel poured out his vial upon the sea. The first calamity has been upon the earth; the second is upon the ocean. The second angel pours his vial upon the sea. Then the waters become red as blood and in the great mortality that follows it seems to John as if every soul in the sea was dead.