Recklessly he forced himself out of the niche. Up above there was commotion, a whirlpool of churning water. The current helped him: he got caught in it and was swept sprawling right over to the torpoon's side.

He clutched at the port, expecting each instant the tear of monster fangs; but he made the interior and clicked shut the port. No matter the water that had come into the main compartment with his entrance. He pulled the starter over, and heard the familiar drone of electric engines, safe inside their water-tight division. He felt no relief at this. There was only the same sick horror.

He raised the torpoon a little. There was one thing to do. Perhaps it was mad to try to destroy that killer whale in so narrow a space, but he was going to attempt it. It would not be so bad to join Chan, if he failed....

A terrific blow struck the stern of the torpoon and spun it around dizzily. Ken made out the killer lifting its flukes for a second blow. Quickly he sped the torp ahead, and turned as best he could. Flashing on his powerful bow-beam, he found the killer to his left, slightly above. Carefully he maneuvered into firing position: then coldly, with deadly accuracy, he centered the sights of his nitro-shell gun on the vital spot behind the eyes. He pressed the trigger: again, and yet again. The projectiles hurtled out.

The monster started; its beady eyes settled on the torpoon; with a lunge it darted forward, jaws gaping wide. And as it came another shell sped true into the tooth-rimmed mouth.

It halted then, and doubled in the water. Shock after shock shook the torpoon as the shells exploded in the whale. For a little while the sea-beast flurried, and once or twice the torp shivered from chance fluke-blows. But then at last came peace. The body rolled over, showing its white belly, and drifted towards the trap's ceiling....

The brown-skinned heads had disappeared from the inner entrance. Kenneth Torrance glanced in that direction for a last time, then looked sadly around.

"So long, Chan," he murmured. "So long."

The torpoon squeezed through the bars of the outer entrance and sped forth into the open sea.