[[I never disputed their age,]]
Never said you did- I am saying that you are insisting on insinuating that ancient artifacts would be buried if they are on a sandy sea bottom- As shown, this isn’t true in many cases- ancient artifacts can and do remain on top or near the top even in very loose sandy sea floors-
As I've already stated, this argument is inane because we disagree upon very little. I have no idea why you have such a need for the seabed to be sand, it's not specified in scripture and it's not evident in anything you've posted.
Feel free to continue on but leave me out of it.