3 And the second angel poured out his bowl upon the sea; and it became like the blood of a dead man: and every living thing in the sea died.
Revelation 16:3 Cross References - RKJNT
Revelation 8:8-9
Revelation 10:2
2 And he had open in his hand a little scroll: and he set his right foot upon the sea, and his left foot upon the earth,
Revelation 11:6
6 These two have power to shut up the sky, so that it does not rain during the days of their prophesying: and have power over the waters, to turn them to blood, and to strike the earth with all manner of plagues, as often as they desire.
Revelation 13:1
1 { And I saw a beast rise up out of the sea, having seven heads and ten horns, and upon his horns ten crowns, and upon each head a name of blasphemy.}