Ancient Underwater Cities Spotted By Submarines

Why aren't the Submarines and underwater research labs spotting any Ancient Underwater Cities.

Surely, if like the scientists say, that since the last ice age, the ice melted and rose the water worldwide by 300ft, then why aren't there any reports of submarines spotting underwater cities.

Also these ancient civilizations must have had wonderful technology, to do the things that is said in all of the religious works about flying vehicles etc. And what about the war of the gods, that was fought in heaven and in the sky. Surely these vehicles that got shot down must have crashed on earth. Then the water came, and so they should be at the depth of 300ft minimum.

And don't try and tell me that a clean-up crew came in and sorted out the mess and took the remaining technology and vehicles, and off into space they went.