God causes the entire sea to turn to blood and every living creature in the sea is killed as a result. I believe the word “sea” is referring to all of our oceans.
“Then the second angel poured out his bowl on the sea, and it became blood as of a dead man; and every living creature in the sea died.” (Revelation 16:3)
Just try to imagine the magnitude of such an event. Causing all marine life in the waters to perish and affecting even the movement of ships on the sea.
The Greek text here is very graphic. Literally it reads, “And it (sea) became blood as of a dead man,” i.e., like a dead man wallowing in his own blood. Every living thing (sea creature) in the sea will die. Some would try to limit this to the Mediterranean Sea. However, these judgments are global and the same word qalassa would be used whether it was one sea or all the water masses.
This is global catastrophe. Under the second trumpet one-third was affected, but now, in keeping with the nature of this judgment, the rest of the sea and marine life is struck. It will wreck fishing and affect ocean navigation, transportation and shipping.
Next. The Third Bowl Judgment.