It was now full noon, and the unclouded sunlight, striking almost straight downward upon the surface of the sea, revealed the bottom at an amazing depth. Poised about half-way down the glimmering transparency, a large squid, or cuttle-fish, was swimming at leisure. His narrow, tapering body was about six feet in length, and perhaps twelve or fourteen inches in diameter at the broadest part, which was the head. From this formless head, seeming to sprout from it as leaf-stalks from a carrot, grew a bunch of tentacles, ten in number, and of about the same length as the body. Body and tentacles alike were of a pallid, dirty yellow-gray, with brownish spots--a color that made its wearer almost invisible in that sun-penetrated sea. The progress of the squid was backward; and he achieved it, not by moving his tentacles, but by sucking a volume of water into a great muscular sac beneath the tentacles and forcibly expelling it again. It looked as if he were breathing water and using it to blow himself along.
The orca was by no means hungry so soon after the feast which she had made on the giant ray, but the succulent morsel of the squid was a temptation not to be resisted. Tipping smoothly, her huge but finely modelled black-and-white form shot straight downward through the shimmering flood. But before she could reach him, the squid looked up and saw her. On the instant his ten loose tentacles tightened to a rigid bundle which offered no obstruction to his progress; his pale sides contracted with a mighty convulsion, expelling a volume of water which shot him along with the speed of a torpedo from its tube; and at the same time, from a gland within the propulsion sac, he squirted forth a jet of inky fluid which spread at once into a great cloud of black, veiling his flight. Behind that concealment he changed his direction, and fled downward toward a deep crevice in the rocky bottom, where he knew that the jaws of his enemy would not be able to reach him.
The orca, undeterred, plunged straight onward into the inky cloud. But once well within that gloom she lost all track of her intended prey. She also, for the moment, lost herself. This way and that she darted, snapping her vast jaws ravenously, but in vain. They closed on nothing but the empty and tainted water. At last, and quite unexpectedly, she emerged from the blackness into the transparent green, and, glancing upward, saw a sight which caused her to hurl herself madly to the surface with a Titanic sweep of her great flanks. That furious stroke made the depths boil like the thrust of a liner's propellers.