Homefaring
by Robert Silverberg
McCulloch was beginning to molt. The sensation, inescapable and unarguable, horrified him—it felt exactly as though his body was going to split apart, which it was— and yet it was also completely familiar, expected, welcome. Wave after wave of keen and dizzying pain swept through him. Burrowing down deep in the sandy bed, he waved his great claws about, lashed his flat tail against the pure white sand, scratched frantically with quick worried gestures of his eight walking-legs.
He was frightened. He was calm. He had no idea what was about to happen to him. He had done this a hundred times before.
The molting prodrome had overwhelming power. It blotted from his mind all questions, and, after a moment, all fear. A white line of heat ran down his back—no, down the top of his carapace—from a point just back of his head to the first flaring segments of his tail-fan. He imagined that all the sun’s force, concentrated through some giant glass lens, was being inscribed in a single track along his shell. And his soft inner body was straining, squirming, expanding, filling the carapace to overflowing. But still that rigid shell contained him, refusing to yield to the pressure. To McCulloch it was much like being inside a wet-suit that was suddenly five times too small.
—What is the sun? What is glass? What is a lens? What is a wet-suit?
The questions swarmed suddenly upward in his mind like little busy many-legged creatures springing out of the sand. But he had no time for providing answers. The molting prodrome was developing with astounding swiftness, carrying him along. The strain was becoming intolerable. In another moment he would surely burst. He was writhing in short angular convulsions. Within his claws, his tissues now were shrinking, shriveling, drawing back within the ferocious shell-hulls, but the rest of him was continuing inexorably to grow larger.
He had to escape from this shell, or it would kill him. He had to expel himself somehow from this impossibly constricting container. Digging his front claws and most of his legs into the sand, he heaved, twisted, stretched, pushed. He thought of himself as being pregnant with himself, struggling fiercely to deliver himself of himself.
Ah. The carapace suddenly began to split.
The crack was only a small one, high up near his shoulders—shoulders?—but the imprisoned substance of him surged swiftly toward it, widening and lengthening it, and in another moment the hard horny covering was cracked from end to end. Ah. Ah. That felt so good, that release from constraint! Yet McCulloch still had to free himself. Delicately he drew himself backward, withdrawing leg after leg from its covering in a precise, almost fussy way, as though he were pulling his arms from the sleeves of some incredibly ancient and frail garment.
Until he had his huge main claws free, though, he knew he could not extricate himself from the sundered shell. And freeing the claws took extreme care. The front limbs still were shrinking, and the limy joints of the shell seemed to be dissolving and softening, but nevertheless he had to pull each claw through a passage much narrower than itself. It was easy to see how a hasty move might break a limb off altogether.
He centered his attention on the task. It was a little like telling his wrists to make themselves small, so he could slide them out of handcuffs.
—Wrists? Handcuffs? What are those?
McCulloch paid no attention to that baffling inner voice. Easy, easy, there—ah—yes, there, like that! One claw was free. Then the other, slowly, carefully. Done. Both of them retracted. The rest was simple: some shrugging and wiggling, exhausting but not really challenging, and he succeeded in extending the breach in the carapace until he could crawl backward out of it. Then he lay on the sand beside it, weary, drained, naked, soft, terribly vulnerable. He wanted only to return to the sleep out of which he had emerged into this nightmare of shellsplitting.
But some force within him would not let him slacken off. A moment to rest, only a moment. He looked to his left, toward the discarded shell. Vision was difficult—there were peculiar, incomprehensible refraction effects that broke every image into thousands of tiny fragments—but despite that, and despite the dimness of the light, he was able to see that the shell, golden-hued with broad arrow-shaped red markings, was something like a lobster’s, yet even more intricate, even more bizarre. McCulloch did not understand why he had been inhabiting a lobster’s shell.
Obviously because he was a lobster; but he was not a lobster. That was so, was it not? Yet he was under water. He lay on fine white sand, at a depth so great he could not make out any hint of sunlight overhead. The water was warm, gentle, rich with tiny tasty creatures and with a swirling welter of sensory data that swept across his receptors in bewildering abundance.
He sought to learn more. But there was no further time for resting and thinking now. He was unprotected. Any passing enemy could destroy him while he was like this. Up, up, seek a hiding-place: that was the requirement of the moment.
First, though, he paused to devour his old shell. That too seemed to be the requirement of the moment; so he fell upon it with determination, seizing it with his clumsy-looking but curiously versatile front claws, drawing it toward his busy, efficient mandibles. When that was accomplished—no doubt to recycle the lime it contained, which he needed for the growth of his new shell—he forced himself up and began a slow scuttle, somehow knowing that the direction he had taken was the right one.
Soon came the vibrations of something large and solid against his sensors—a wall, a stone mass rising before him—and then, as he continued, he made out with his foggy vision the sloping flank of a dark broad cliff rising vertically from the ocean floor. Festoons of thick, swaying red and yellow water plants clung to it, and a dense stippling of rubbery-looking finger-shaped sponges, and a crawling, gaping, slithering host of crabs and mollusks and worms, which vastly stirred McCulloch’s appetite. But this was not a time to pause to eat, lest he be eaten. Two enormous green anemones yawned nearby, ruffling their voluptuous membranes seductively, hopefully. A dark shape passed overhead, huge, tubular, tentacular, menacing. Ignoring the thronging populations of the rock, McCulloch picked his way over and around them until he came to the small cave, the McCulloch-sized cave, that was his goal.
Gingerly he backed through its narrow mouth, knowing there would be no room for turning around once he was inside. He filled the opening nicely, with a little space left over. Taking up a position just within the entrance, he blocked the cave-mouth with his claws. No enemy could enter now. Naked though he was, he would be safe during this vulnerable period.
For the first time since his agonizing awakening, McCulloch had a chance to halt: rest, regroup, consider.
It seemed a wise idea to be monitoring the waters just outside the cave even while he was resting, though. He extended his antennae a short distance into the swarming waters, and felt at once the impact, again, of a myriad sensory inputs, all the astounding complexity of the reef-world. Most of the creatures that moved slowly about on the face of the reef were simple ones, but McCulloch could feel, also, the sharp pulsations of intelligence coming from several points not far away: the anemones, so it seemed, and that enormous squid-like thing hovering overhead. Not intelligence of a kind that he understood, but that did not trouble him: for the moment, understanding could wait, while he dealt with the task of recovery from the exhausting struggles of his molting. Keeping the antennae moving steadily in slow sweeping circles of surveillance, he began systematically to shut down the rest of his nervous system, until he had attained the rest state that he knew— how?—was optimum for the rebuilding of his shell. Already his soft new carapace was beginning to grow rigid as it absorbed water, swelled, filtered out and utilized the lime. But he would have to sit quietly a long while before he was fully armored once more.