Too late, I watched the girl vanish beneath the frothy, scummy surface.

Nothing he recognized floating on the boiling, scummy surface even.

A few early autumn leaves floated on the water's scummy surface, along with a dead sparrow.

Above the scummy surface of the dark water he saw a platform, fastened on stout posts projecting from the pond.

The bodies slipped beneath the scummy surface.

As he cautiously raised his head above the scummy surface, he sensed movement through the violet Barwhon mists.

There, ripples were being muffled by the scummy surface of a pool that was many feet in depth.

The only proof of living persons there was the roving light of the high-powered flashlight, as it occasionally swept the scummy surface below.

He stood up and pointed to the scummy green surface of the canal.

Then the creature disappeared into the murk until only its eyes broke the scummy surface.