Hurrying feet warned Bob that to make a getaway he must act quickly but, as he sprang to his feet, the man, who had evidently managed to turn onto his side, grabbed one of his feet. A sudden hard tug freed the foot but at the same instant another hand, belonging to another man, caught hold of his arm and, for an instant, he almost gave up hope of escape. The fog was not quite so dense now and he could see that the man who had grabbed him was a large and powerful fellow.
"Hold him, Bill," cried the man from the floor.
"I got him."
But he was mistaken for, even as he spoke, Bob freed his arm with a strong jerk and, before the man could renew his hold, he reached the rail, only four or five feet away, and, without hesitating an instant, dove head first into the sea. No thought of sharks entered his mind until he struck the water, then the thought that he had escaped one danger only to fall into another even more menacing sent a chill through his heart. Every instant, as he struggled to the surface, he expected to feel the sharp teeth of a man-eater close on one of his legs. But he did not lose hope and, as his head bobbed out of the water, he gave a low call.
"Jack!"
There was no answer and his heart sank as he thought that probably, in accordance with their agreement, Jack had started back for the Valkyrie, having heard the noise of the struggle on deck and supposing that he was a prisoner. Had it not been for the sharks he would not have cared as he was a strong swimmer and the boat was not far away. And now he was undecided whether to strike out and risk the sharks or to climb up the anchor chain again. The latter would, he knew, be safer, for the time being at least, but the fog was now lifting perceptibly and it could be only a matter of a short time before he would be discovered. Having escaped from them by such a narrow margin he hated to deliver himself back into their hands and had about decided to risk the sharks when the faint sound of a paddle dipping into the water reached him and, almost at the same instant, through the thinning fog, he caught sight of the row boat about twenty feet away.
"This way, Jack," he cried, determined to make him hear even though it revealed his presence to those on board the ship.
Jack heard his call and in another moment he was climbing over the stern, wet but, for the moment, thankful that he had, at least, escaped the sharks.