The ocean also had its mysteries, the effect of which was aided by the dim twilight, through which it was imperfectly seen for more than half the year. Its bottomless depths and secret caves contained, according to the account of Sweyn and others, skilled in legendary lore, such wonders as modern navigators reject with disdain. In the quiet moonlight bay, where the waves came rippling to the shore, upon a bed of smooth sand intermingled with shells, the mermaid was still seen to glide along the waters, and, mingling her voice with the sighing breeze, was often heard to sing of subterranean wonders, or to chant prophecies of future events. The kraken, that hugest of living things, was still supposed to cumber the recesses of the Northern Ocean; and often, when some fog-bank covered the sea at a distance, the eye of the experienced boatman saw the horns of the monstrous leviathan welking and waving amidst the wreaths of mist, and bore away with all press of oar and sail, lest the sudden suction, occasioned by the sinking of the monstrous mass to the bottom, should drag within the grasp of its multifarious feelers his own frail skiff. The sea-snake was also known, which, arising out of the depths of ocean, stretches to the skies his enormous neck, covered with a mane like that of a war-horse, and with its broad glittering eyes, raised mast-head high, looks out, as it seems, for plunder or for victims.
Many prodigious stories of these marine monsters, and of many others less known, were then universally received among the Zetlanders, whose descendants have not as yet by any means abandoned faith in them.[18]
Such legends are, indeed, everywhere current amongst the vulgar; but the imagination is far more powerfully affected by them on the deep and dangerous seas of the north, amidst precipices and headlands, many hundred feet in height,--amid perilous straits, and currents, and eddies,--long sunken reefs of rock, over which the vivid ocean foams and boils,--dark caverns, to whose extremities neither man nor skiff has ever ventured,--lonely, and often uninhabited isles,--and occasionally the ruins of ancient northern fastnesses, dimly seen by the feeble light of the Arctic winter. To Mordaunt, who had much of romance in his disposition, these superstitions formed a pleasing and interesting exercise of the imagination, while, half doubting, half inclined to believe, he listened to the tales chanted concerning these wonders of nature, and creatures of credulous belief, told in the rude but energetic language of the ancient Scalds.