COMMENTS
one popular theory about this particular anomaly is that they are impact craters. either a large astral body exploded near earth or a large astral body collided with the asteroid belt sending more asteroids to earth
Could it be that there's either oysters in the areas or there have been oysters there?
The Bays were formed by the retreat of tsunami waters. A landslide off the east coast caused an enormous wave some 1,000ft tall to wash inland as far as Winston-Salem NC. When it retreated it carved these holes.
These are probably sinkholes left from an evacuated aquifer.