Chan Beddoes' helmet was off, but the rest of his body was still clad in a sea-suit. He half squatted on the rocks, his face raised and peering at the first torpooner fearfully, as if afraid he would disappear as suddenly as he had come. The beam of light came from a hand-flash held in his hand. Scattered around were pieces of whitish meat--fish--and the air was sickening with its smell. Ten feet above was the chamber's domed ceiling, from which water kept dripping to the slimy rocks below. "Air?" repeated Beddoes, stupidly. His mind was obviously affected. "They fetch it from the surface with seal-hide bags, and release it. They change it often. All over the caverns. They have to breathe, too. I think they sleep in rooms like this." His voice rose with hysteria. "Ken, they're seals and yet they're human! Human, down here! They have arms and legs and they breathe air, like whales--and they've kept me here for weeks, years--I don't know! They're devils! It's been so dark and cold and--and--" He began to cough painfully. "I know," Ken told him sympathetically. "Steady, man. How did you get here? How did they catch you?" * * * * * Beddoes' eyes wandered. He sucked his lips. "I can't remember," he said. "No. Yes! We left the _Narwhal_, both of us, chasing those killers. They broke up and we went after different ones, and I lost sight of you. "I chased mine for a long time, and when I fired I only wounded him. He went like hell, and I after him. After half an hour I was ready to give up; I couldn't get close enough. God! Ready to return! To the submarine! To life!" His voice broke, and he paused until he was able to go on. "Then I saw another shape ahead of the whale. A queer looking thing--one of these human seals, though I didn't know it then. It seemed to be fleeing from the killer, just as the killer was from me. There was something big and dark ahead--a shadow, I thought, and kept my eyes on the whale. And the next second my torpoon crashed and I was knocked cold. "It's a deliberate scheme," he went on at a tangent. "The seal things get a killer chasing them and lead it towards the traps they've got in the sides of these hillocks. They dart in and the whale follows; then bars drop over the entrance and they've got the killer trapped. They eat them." "But how does the blubber-man get out?" Ken asked. Beddoes scowled. "Oh, they're clever enough! A passage runs off the trap, big enough for the seal thing, but not for a killer.... Well, my torp had gone into the trap and was stuck in one of the walls. When I came to I reversed my engines full, but I couldn't get free. The impact had ruined my radio. "Through the after peep-holes I could make out the killer in the trap with me, lashing around like mad. The bars over the entrance were wide-spaced enough to let the torp squeeze through--but I couldn't get loose.