Roughly 70% the worlds surface is covered by oceans and seas.
The passage states that something like a great mountain burning with fire was thrown into the sea. A meteor, especially a big meteor could be described as like a mountain, but this object has one unique attribute, whatever it is, it will turn one third of the sea to blood.
One third of the living creatures in the sea die, along with the pungent smell of blood and the rotting carcasses of one third of all sea life will shortly begin washing up along the seashores, disease will spread.
The fall-out of this catastrophic global devastation will also cause 1/3 of all the sea creatures to perish and 1/3 of all the world’s ships and their crews to perish also!
1. 70.8 % of the earth’s surface is covered by water. 68% of that 70.8% is salt water. 1/3 of the seas or 22.6% of the world’s surface area or 122 million sq/km or 47.1 sq/miles will be decimated and turned into blood! That is roughly the size of the Pacific Ocean!
Right now in your home almost everything you own was shipped via large ocean going transport ships. What would happen if one third of all these ships were destroyed?
Manufacturing, distribution and transportation of everyday needed essentials would be cut by one third, people will suffer, many will starve.
The Next Judgment will affect one third of all the fresh water, springs, rivers etc.