The captain strolled off to watch the antics of the tigers of the deep, for four ferocious-looking sharks had been persistently following the "Aphrodite" as if anticipating a catastrophe.
The chief officer, although he would much rather have preferred to make all snug and dive to a depth of seven or eight fathoms, was not a man to quibble. He made his way to the hatch-way, to call up the small-arms party. Kenwyn stood a few paces from his superior, while Hythe, unwilling to say anything that might lead to his being snubbed, remained by the after conning-tower.
Suddenly the semi-gloom was rent by a vivid flash of lightning, that played upon the metal deck and upon the placid surface of the ominous sea. A deafening peal of thunder succeeded the flash. For a moment the sub was dazzled by the glare. When he looked aft, Kenwyn was lying on the deck, a portion of the stanchions and rails were shattered, and Captain Restronguet nowhere to be seen.
Raising a shout of "Man Overboard!" Hythe took a running dive and plunged into the sea. He struck the water heavily, for the "Aphrodite" was moving at a good speed. He might very well have broken his back but for the velocity with which he executed his dive. Not till he rose to the surface did he give one thought to the dreaded sharks: it was then too late to count the risk.
Fortunately the monsters, frightened by the flash of lightning, had for the time being disappeared. Hythe struck out to the spot where the bubbles indicated the captain's position, for, winded by the shock, the unfortunate man was sinking never to rise again.
Guided by the bubbles the sub dived. Eight powerful strokes he made ere he perceived Captain Restronguet's form slowly settling towards the bottom of the sea. Four more and his left hand grasped the unconscious man by his collar.
Striking out with his right, and his unimpeded legs, Hythe rose towards the surface. He had been almost winded by his plunge overboard, and had had no opportunity to recover his breath. His lungs felt as if they were on the point of bursting; his temples throbbed. It seemed ages before his head appeared above the surface, and he was able to take a deep draught of the sultry air. Turning on his back he kept himself afloat, at the same time supporting the unconscious captain.
The "Aphrodite" had already lost way and was going astern; in a few minutes a dark, triangular object cleaving the leaden-coloured water attracted the sub's attention. His whole senses momentarily deserted him. He realized that a shark was approaching.
His first instinct was to abandon the unconscious man and strike out madly towards the submarine; but in a moment the temptation passed. Lashing out with his legs Hythe churned up a column of water. The shark stopped, wheeled and retreated a few yards.
Another of these dreaded fish came up, and the pair, regaining confidence, began to approach, swarming towards the two men in ever-narrowing circles.