Revelation 8:8-9 Then the second angel sounded: And something like a great mountain burning with fire was thrown into the sea, and a third of the sea became blood. And a third of the living creatures in the sea died, and a third of the ships were destroyed.

I have always imagined a burning Mount Everest free-falling into the Atlantic. Of course, it is “something like” a great mountain and I only say Atlantic because it is closest to me.
There are some people that have never seen the ocean and some have never seen a mountain, except in photos. But photos don’t do the real thing any justice.
I’m sure my imagination doesn’t do John’s vision any justice.
So what else do we know?
A third of the earth’s ocean becomes blood and a third of the ocean life dies – fish, mammals, invertebrates, and crustaceans all dead!
Between the blood and the dead creatures, the stench will be terrible, perhaps, worldwide as currents and winds carry it abroad.
Top it off with the destruction of a third of the ships. Commercial fishing, trade and transport, and naval vessels.
The economy doesn’t go untouched with the loss of shipping as the loss of ships and as blood closes down those shipping lanes.
This event will catch those living at the time by surprise, even though it is available for reading. We did!
And it does not catch our Lord by surprise, nor does it surprise Him that so many will continue to reject Him as Savior.
Remember, a majority of people would rather pray to a mountain than pray to God for salvation (Rev 6:16)
My advice is for you to ask God for forgiveness through the blood of Jesus!
It is your only hope!
ONLY!!!