Og stood in our little doorway, talking to Nona. He was a young man about my own age. I have since learned he was not full-blooded Marinoid—but that can come later. He was somewhat taller than Nona, but shorter than myself. His legs, with their connecting membrane, were bare to slightly above the knee. From there to his shoulders, he was dressed in the characteristic Marinoid fashion—a single-piece garment of green woven grass. On his bulging chest he wore an ornament—a flat, circular affair of many tiny shells linked together. His four, tentacle-like arms waved before him. The hair on his head was thick and matted, but short. With one of his pincers he would occasionally brush it—a gesture evidently intended to impress Nona with his grace. Og’s face—with features not much different from my own except that his mouth was larger and his eyes slightly protruding—was nevertheless most unpleasant. His chin was weak, his expression egotistical; and more than that, I never liked the way he looked at Nona. A queer sort of being—this Marinoid—for me to be jealous of! If you are thinking that, you are wholly wrong. We were living in a Marinoid world, and in all that world only Nona and I were queer-looking! _It was we who were abnormal, not they!_ Nona, with her flowing hair and her short grey-green Marinoid jacket, was to me the most beautiful creature in the world. But, as Caan pointed out, our eyes—Nona’s and mine—were set too deep in our head to be of real use in seeing sidewise. Our mouths were too small to admit the water comfortably, and our chests too small and immobile to handle it properly. Two arms, which could bend in only one direction, were surely not so advantageous as the four Marinoid arms; and our legs, without the connecting membrane, would keep us always very indifferent swimmers. This was before I demonstrated my muscular strength; Caan changed his opinion a little after that. * * * * * I have wandered from Og. Nona unwittingly attracted him, in spite of her physical handicaps. I know why now. He was a half-breed; the blood in his veins which was not Marinoid barred him from finding a mate among the Marinoid women. And when Nona came he wanted her. I did not know this at the time, but I sensed it. And Nona too was afraid of Og, though she had not shown it outwardly. I was in the other room this time when Og came to our new home. He stood there talking to Nona; and suddenly I heard her scream. I launched myself in a dive through the inner doorway. They were up near the ceiling and Nona was struggling with him. He was laughing; he dropped her, and came swimming down to face me, still grinning insolently. “She is tempting,” he said. “She has learned the ways of the Marinoid women very quickly.” I swam at him, but he avoided me; and before I could seize him, Caan appeared in the doorway and stopped me.