Those ARE amazing.
WOW.
Do you know anything about the wrecks? Ie., what ships were they and when were they sunk? The steel one doesn't really look that old to me. I assume the cannons are from something WAY older.
And .. oh .. said it before but man the gorgonian diversity is amazing, love those seafans and seawhips. The brains too. Those Diploria brains look like ... well, real brains.
It's too bad we can get frags of those in the hobby. Oh well, it's probably better that they be protected like that.