"She must have fallen with the shackles where the hook can't get hold, but I think she's only about three feet under water." The other studied the broken surface.

The water was not transparent, but here and there a darker patch indicated a rock below.

The eddies made a revolving slack along the bank, but near the skip joined the main current in its downstream rush.
"I've a notion there's a gully between her and us," he remarked.
"Anyhow, we'll try to wade, if you like." Festing threw off his jacket and plunged in.

When he had gone a few feet he was up to his waist and it cost him an effort to keep his feet.

After two or three more steps, the bottom fell away and, floundering savagely, he sank to his shoulders.