He twirled it in the air like a crap shooter, and dug deep down in the water with it, "lost" it, then leaped back, briskly waiting for it to rise.

About them the water, due to the ramming and beating, grew restive. Billows sprang up; soaring, swelling waves sent the skiff nearer the shore. Anxiously Philip and Ernest watched for the cork to make its ascent.

It was all a bit vague to the whites on the deck, and an amused chuckle floated down to the boys.

And still the cork failed to come up.

"I'll go after it," said Philip at last, "I'll go and fetch it." And, from the edge of the boat he leaped, his body long and resplendent in the rising tropic sun.

It was a suction sea, and down in it Philip plunged. And it was lazy, too, and willful—the water. Ebony-black, it tugged and mocked. Old brass staves—junk dumped there by the retiring French—thick, yawping mud, barrel hoops, tons of obsolete brass, a wealth of slimy steel faced him. Did a "rammed" cork ever go that deep?

And the water, stirring, rising, drew a haze over Philip's eyes. Had a cuttlefish, an octopus, a nest of eels been routed? It seemed so to Philip, blindly diving, pawing. And the sea, the tide—touching the roots of Deathpool—tugged and tugged. His gathering hands stuck in mud. Iron staves bruised his shins. It was black down there. Impenetrable.

Suddenly, like a flash of lightning, a vision blew across Philip's brow. It was a soaring shark's belly. Drunk on the nectar of the deep, it soared above Philip—rolling, tumbling, rolling. It had followed the boy's scent with the accuracy of a diver's rope.

Scrambling to the surface, Philip struck out for the boat. But the sea, the depths of it wrested out of an æon's slumber, had sent it a mile from his diving point. And now, as his strength ebbed, a shark was at his heels.

"Shark! Shark!" was the cry that went up from the ship.