Well seeing the flood of Noah's didn't cover the whole earth
But yet scientist have found out in deserts mountains many clam shells 300 miles from the nearest ocean.
This flood of water happen million of years before the flood of Noah's ever happened.
2 Peter 3:5-7
5--"For this they willingly are ignorant of, that by the word of God the heavens were of old, and the earth standing out of the water and in the water"
Note here in verse 5, The earth standing out of the water and in the water.
In Genesis 1:2, we will find the earth standing out of the water in the water.
So where exactly do you suppose this water came from, seeing that this flood of water was there way before the flood of Noah's happened.
6 Whereby the world that then was, being overflowed with water, perished"
Note here in verse 6, everything
Perished, meaning nothing survived.
Unlike the flood of Noah's, there were
8 people and animals survived.
But in this flood that 2 Peter speaks about nothing survived, everything Perished.
7 But the heavens and the earth, which are now, by the same word are kept in store, reserved unto fire against the day of judgment and perdition of ungodly men"
Note here in verse 7, God is not going to destroy the earth again by a flood of water.
God going to destroy everything by fire.