Dark matter blocks the transmission of light thereby causing darkness or night. The fact we cannot see dark matter actually proves my point.
I guess you don't understand the phrase "irreparable damage". If somethone with a strong enough faith to cast mountains into the sea actually cast, lets say Mount Everest into the Pacific Ocean the resulting tsunami would kill millions. Therefore a person with this type of faith is not going to cast a mountain into the sea since to do so is not only counter-productive, it would violate the Lord's commandment to "love your neighbor". This was an object lesson concerning faith and praying without doubt and was not meant to be taken literally.
Now if all you are out to do is ridicule our faith instead of seeking to understand our faith I will just lock this thread. You are being given reasonable and rational explanations so you need to get off your high horse and practice what you preach concerning rational explanations.