Suddenly, not a dozen feet ahead of his nose, a huge salmon seemed to be lifted horizontally almost clear of the water. It writhed and thrashed for a second in a sort of convulsion, then sank with a heavy swirl. The bear stared curiously. He had never seen anything like that before. The salmon had not jumped of its own accord, that was evident. It had apparently been held up from below, firmly and steadily sustained as it struggled, for that brief space of moments. To the wild creatures anything new, anything unknown, is always either interesting or terrifying. The white bear was unacquainted with terror, but he was interested instantly. He swam toward the spot where the salmon had sunk.
The next moment something still more strange arrested him. A little to one side of the spot where the salmon had behaved so curiously, a great sharp-pointed spike of yellow horn, massive and twisted, was thrust up about three feet above the water and instantly withdrawn. Blood clung thinly in the convolutions of the horn. It was a mysterious and menacing weapon. Filled with a curiosity that was now warming into wrath, the bear made for the spot. There was something like defiance in that sudden upthrust. Moreover, it seemed that some stranger was poaching on his fishing-grounds. The bear's wrath flamed into fury in a few seconds. Unable to see down into the disturbed and discoloured tide, he dived deep, to get below the salmon and the blood, and see what manner of rival it was with which he had to deal. Whatever it was, he was going to drive it off or kill it. He would share his salmon with no one.
Meanwhile, just beneath the lowermost ranks of the horde, a big, pallid-skinned, fish-like creature was swimming slowly this way and that. Shaped something like a porpoise, with a big bluff head and tremendously powerful flukes, it belonged evidently to the great kinship of the whales. Its massive body was about fourteen feet in length. But the strange thing about it, setting it wide apart from all its cetacean kin, was a long, heavy, twisted horn or tusk, of yellow ivory, jutting straight out from its upper jaw to a length of about four feet. It was that most peculiar of all the whales, a narwhal.
From time to time this ominous shape would launch itself upward among the salmon, transfixing some of the largest fish with lightning thrusts of its tusk, and killing others by terrible, thrashing side-blows of the weapon. Sometimes it would open its great mouth and engulf the most convenient victim; but it did not seem ravenous. Its hunger was already all but glutted, and its purpose seemed to be, mainly, to kill, in order that food might still be abundant after the salmon had passed on up the river beyond his reach.
When the white bear, swimming under water outstretched like an otter, saw this threatening form, his veins ran fire. Darting downward, easily as a mink might have done, he struck the unsuspecting narwhal in the middle of the back just between the flippers. His mighty fore paws, armed with claws like knife-blades, tore two gaping wounds in the narwhal's hide, and the dark blood jetted forth. But the wounds went little below the blanket of blubber which enclosed the narwhal underneath his hide. Beyond the pain of those two tearing buffets, the great sea-beast was little the worse of them. With a surge of his tail he lunged forward, and turned furiously upon his assailant.
The bear, though rash in his arrogance and rage, was no mere headlong blunderer. Though he mistook the narwhal for some kind of gigantic seal, and therefore scorned him, he had not missed the possibilities of that long, menacing horn. He was upon his foe again in an instant, not giving him time to charge, and successfully planted another rending stroke which disabled the narwhal's right flipper. Then, however, finding that he could hold his breath no longer after such terrific exertion, he darted to the surface, and hurriedly refilled his lungs.
To regain his breath took him but a moment, and instantly aware of his peril while at the surface, he dived again to renew his attack. As he dived, either his own craft or some subtle forewarning led him to twist sharply to one side. But for this, his fighting would have ended then and there, his heart split by the thrust of that giant tusk. As it was, the mad upward rush of the narwhal missed its aim. The bear felt a couple of salmon hurled in his face. Then the horn shot past his neck; and a black mass smote him full in the chest, with a force that knocked the wind out of him, and bore him, clawing and biting passionately, back to the surface. His blows, of course, were delivered blindly, but one struck home just above the narwhal's sinister little eye, wiping it out of existence.
As the bear got his head above water, he choked and gasped, swimming high for a few seconds in the struggle to recover his breath. Realizing now to the full how dangerous an adversary he had challenged, he knew that every second he remained at the surface was a deadly peril. But, at first, the breath would not return to his buffeted lungs. With his nose high in air he gave a longing look away across the tumult of the journeying host, across the tranquil white water beyond, to the low, desolate shore with its dirty ice-cakes. For the moment, he wished himself back there. Then, as he regained his breath, and his great, bellows-like lungs resumed their function, his courage and his fighting fury also returned. The red light of battle blazed up again in his eyes, and wheeling half-about with a violence that sent the water swirling and foaming from his mighty shoulders and hurled a score of salmon upon each other's backs, he dropped his head to dive once more into the fight.
The narwhal, for his part, had fared badly in that last encounter. With one eye blinded, his head badly clawed, and the tough cartilage about his blow-holes torn deeply by his adversary's teeth, he was bewildered for the moment. But he was not daunted. His sluggish blood only boiled to a blacker fury. Never before had he met anything like serious opposition. The colossal sperm-whale, undisputed lord of the ocean, never came into these cold northern waters; and the huge, blundering whalebone whales he despised. He had transfixed and slaughtered the helpless calves of this species under the very fins of their gigantic but timorous mothers. He had pierced seals, and even, once, a walrus. Terribly armed as he was, and swift, and powerful, he had never yielded way to any other inhabitant of his cold and glimmering world.
For a few moments of agitated confusion, flurried by the pain of his wounds, he swam straight ahead, just below the salmon. Then, recovering his wits, he turned in a rage and looked about, with his one remaining eye, for the bear. At first, unable immediately to readjust his vision, he could not locate him; but presently, staring up vindictively through the straight-swimming, blue and silver ranks of the journeying fish, he saw the big white form swimming at the surface some little distance away. Up through the thronged and swirling tide he darted on a long slant, straight and swift as a hungry trout rising to a May-fly.