Revelation 8:8
And the second angel sounded; and, as it were, a great mountain, burning with fire, was thrown into the sea: and the third part of the sea became blood.
Mark 11:23
For, verily I say to you, that whoever will say to this mountain, Be removed, and be cast into the sea, and will not doubt in his heart, but believe that what he says will come to pass, he shall have whatever he says.
Revelation 8:7
And the first angel sounded; and there were hail and fire mingled with blood, and they were thrown into the earth: and the third part of the earth was burned up, and the third part of the trees was burned up, and all the green grass was burned up.
Revelation 11:6
These have authority to shut heaven, that it may not rain in the days of their prophecy; and they have authority over the waters, to turn them to blood, and to smite the earth with every plague, as often as they wish.
Revelation 16:3-21
And the second angel poured out his cup on the sea; and it became blood, like that of a dead man: and every soul in the sea died.