Revelation 16:3
And the second angel poured out his vial upon the sea; and it became blood, like that of a dead man: and every living soul that was in the sea died.
Revelation 8:8-9
And the second angel sounded; and it was as if a great mountain, burning with fire, was cast into the sea;
Revelation 11:6
These have power to shut heaven, so that no rain shall be showered down in the days of their prophecy; they have power over the waters, to turn them to blood, and to smite the earth as often as they will, with every plague.
Revelation 10:2
And he had in his hand a little book, open; and he put his right foot upon the sea, and the left upon the earth.
Revelation 13:1
And I stood upon the sand of the sea, and saw a savage beast ascending out of the sea, having seven heads and ten horns; and upon its horns were ten diadems; and on its heads were the named of defamation.