Wave action across endless eons of time created coral reefs.

Wave action through endless eons of time created coral reefs.

↑What's the difference between two sentences above？

Question

Wave action across endless eons of time created coral reefs.

Wave action through endless eons of time created coral reefs.

↑What's the difference between two sentences above？

Answer

Hello CN2818,
The sentences are the same in literal meaning, and by the emotional response I have while reading them.