"What are you going to do?" asked Tommy.

"You see. Kick! kick!" said the girl.

"Don't leave me," pleaded Tommy, handing her the knife.

Fangati looked around as if in search of something. Suddenly she snatched Tommy's handkerchief, which was tucked into her belt, and dived off the rock. When she disappeared Tommy saw the handkerchief floating. In a moment the shark rushed silently through the water, attracted by the splash. As it came beneath the handkerchief, which Fangati had dropped as a decoy, she came up beneath it and plunged the knife deep into its side. Then she dived again and disappeared.

The shark, thrashing the water into foam, dashed about in zigzag fashion. Tommy watched it fascinated, fearing that it might have struck Fangati. But in a moment she heard the girl's merry laugh behind her. Fangati came up on the farther side of the rock, on to which she clambered, splashing through the water to Tommy's side. The girls watched the gradually weakening movements of the monster, until at length with a final heave it sank to the bottom.

"S'im! S'im!" cried Fangati, pointing to the shore.

"Oh, I couldn't," said Tommy, clinging to the girl.

The possibility of there being other sharks between her and the shore unnerved her. Yet if she remained on this rock she must be washed off presently by the fast-rising tide. She was in a terrible state of anxiety, aware that she could not keep her footing long, yet unable to face the risk of being caught by a shark. Fangati seemed to guess at her state of mind. Disengaging herself from Tommy's grasp, without waiting for objections, she slipped off the rock and swam rapidly after the canoe, which was drifting farther and farther down the coast. Tommy watched her anxiously. Would she reach the canoe safely? Could she return with it in time?

The water was now up to Tommy's waist; she could hardly keep her footing as the tide surged over the rock. The gap between the little black head and the canoe was steadily diminishing. Tommy gave a gasp of relief as she saw that Fangati had overtaken the little craft. But what was she doing? She had swum beyond it. In a moment Tommy saw the explanation: the paddle had drifted beyond the canoe, and the swimmer had to recover it first. Fangati caught the paddle, turned about, and swimming back to the canoe, climbed over its side.

Tommy was seized with a sickening fear that help would come too late. The waves were tumbling over the rock with increasing force: her feet were lifted: she had the presence of mind to tread water, but was all the time in a state of nervous terror, expecting a shark to come up and snatch her in its horrid jaws. She felt that Fangati in the water-logged canoe could not reach her in time. Again she screamed for help.