Then he sank out of sight, and I was alone on the surface.

He went over the side, into the water, sinking out of sight.

And thus he, too, sank out of sight down into the valley below.

Then she sank out of sight and was never seen again.

After that his past sank out of sight for him.

The monster sank out of sight, but that did not end the problem.

The stern sank out of sight in less than four minutes.

The first became famous and is still popular today, but the second sank out of sight.

Others fell into the ocean and sank out of sight.

As he watched, first one, then the other slowly sank out of sight.