A Sack of Shakings

by Frank Thomas Bullen

In one of the most charming chapters of that truly charming book, Gilbert White’s “Natural History of Selborne,” the gentle author tells of some strange instances of sociability among the denizens of the farmyard, a craving for companionship that brought into intimate acquaintanceship such widely differing animals as a horse and a hen, a doe and some cattle. This, as a proof that loneliness is an abnormal condition of life even among the lesser intelligences of creation, “gives to think,” as our neighbours say; but probably few people would imagine that the same desire for society obtains even among the inhabitants of the deep and wide sea.

I do not now speak of such gregarious fish as compose the great shoals that beneficently visit the shallower waters washing populous countries, from whose innumerable multitudes whole nations may be fed without making any appreciable diminution in their apparently infinite numbers; but of those more varied and widely scattered species that are to be found near the sea-surface all over the ocean. In the ordinary routine of modern passenger traffic no observation of these truly deep-sea fish is possible, for, in the first place, the breathless panting of the propeller fills them with dread of the swiftly-gliding monster whose approach it heralds; and in the next, the would-be observer has no time to catch even a glimpse of the inhabitants of that teeming world beneath him with, perhaps, the exception of a rapidly-passing school of porpoises or the hurried vision of a sea-shouldering whale.

No, for the deliberate observation necessary in order to know something of the sea-people a sailing-ship must be chosen, the slower the better, one wherein may be felt to its fullest extent by the mindless, sightless passenger the “intolerable tedium of a long voyage.” In such a ship as this the student of marine natural history, provided he be not responsible to stern owners for the length of his passage, will welcome with great delight the solemn hush of the calm, when the windless dome above him is filled with perfect peace, and the shining circle upon which he floats is like the pupil of God’s eye. Then, leaning over the taffrail, looking earnestly down into the crystalline blue, you may see the bottom of the ship without visible support as if poised in a sky of deeper blue and more limpid atmosphere. The parasitic life that has already attached itself to the vessel is all busy living. Barnacles with their long, glutinous feet-stalks waving in imperceptible motion, are expanding from between their shells delicate fringes of brown, that, all eyes to see and hands to hold, allow nothing that can feed them to pass them by. And as they flex themselves inward with the supplies they have drawn from the apparently barren water, you can fancy that the pearly whiteness of the shells gleams with a brighter lustre as of satisfaction. The dull-hued limpets, like pustules breaking out upon the ship’s sheathing, may also be discerned, but less easily, because they have such a neutral tint, and love to nestle amongst a tangle of dank, deep-green sea-moss, that, except where the light from above breaks obliquely down upon it, looks almost black.

But a little patient watching will reveal a set of tiny arms forth-darting from the irregular opening in the apex of each limpet-cone. They, too, are busy continually, arresting every morsel, invisible to feeble human sight, that comes within their reach, and passing it within for the up-keep of the compact, self-contained residence. And there, can it be possible, at all this distance from land? It is not only possible but undeniable that there is a crab, an impudent, inquisitive little tangle of prying claws surrounding a disc about the size of a shilling. He strolls about in leisurely fashion, but making a track at all sorts of angles, among the living fixtures, skirting each barnacle or limpet with a ludicrous air of contempt, as it seems. You can almost imagine him saying: “I never saw such a lot of dead-an’-alive ornaments in my life. Say! how d’you like stoppin’ in the same old spot for ever an’ ever?” But, impervious to his rudeness, the busy creatures never cease their one set of movements, utterly ignoring his very existence. You cannot help but wonder what becomes of that little crab when the ship begins to move, for you know that he can’t possibly hold on against the tremendous brushing past of the water. He isn’t built for that.

The other parasites, whether animal or vegetable, have, you notice, been busy for who shall say how long adapting themselves to every condition of their dependent life, so that now, whatever motion be made by the ship, they present to the onrush of the water just the right angle of surface that will allow it to slip over them easily, while at the same time they are always in a position to levy contributions. There is a puzzling lead-coloured streak along the copper near the keel to which your eye returns again and again, for although it will persist in looking like a place whence a strip of sheathing has been torn, there is yet a suggestion of quivering life about it which is certainly not the tremulous outline given to every inanimate object under water. Suddenly your doubts are set at rest—the mystery is solved. The steward has cast over the side some fragments of food that settle slowly downwards, turning over and over as they sink and catching the diffused light at every point, so that they sparkle like gems. As they pass the almost motionless keel the leaden-looking streak suddenly detaches itself, and, almost startlingly revealed as a graceful fish, intercepts and swallows those morsels one after the other. You fetch a few more fragments, and, dropping them one by one, entice your new acquaintance nearer the surface, so that you may admire the easy grace of every movement, and study at your leisure the result of this creature’s development along certain lines of inventiveness.

It is a Remora, or “sucker,” a species of shark that never exceed a dozen pounds in weight. Having all the shark’s usual qualities of slothfulness, voracity, and timorousness, it is prevented from becoming ferocious also by its limitations of size and the feebleness of its teeth. And as it would be hopeless for it to attempt to prey upon other fish while they are alive, from its lack of the requisite speed as well as from the scarcity of fish of sufficiently small size in the deep waters which are its abiding-place, it has developed a parasitic habit, which saves it a whole world of trouble by insuring its protection, economising exertion, and keeping it in the midst of a plentiful food-supply. All these objects are attained in the simplest manner possible, aided by an unfailing instinct guiding the creature in its selection of an involuntary host.

On the top of its head, which is perfectly flat, it has developed an arrangement which has, perhaps, the most artificial appearance of anything found in animated Nature. It is in plan an oblong oval, with a line running along its middle, to which other diagonal lines, perfectly parallel to each other, extend from the outer edge. The whole thing is curiously like the non-slipping tread moulded upon the soles of many lawn-tennis shoes. This strangely patterned contrivance is really an adhesive attachment of such strength that, when by its means the fish is holding on to any plane surface, it is impossible to drag the body away, except by almost tearing the fish in half. Yet by the flexing of some simple muscles the fish can release its body instantly, or as instantly re-attach itself. Of course, it always adheres to its host with its head pointing in the same direction as the host usually travels, because in that manner the pressure of the water assists the grip of the sucker and keeps the whole body lying flatly close to whatever is carrying it along. In this position it can perform all the natural functions. Its wide mouth gapes; its eyes, set one on either side of its flattened head, take in a most comprehensive view of the prospect, so that nothing having the appearance of edibility can pass that way without being seen and, if the speed of its host admits, immediately investigated. Thus its sociability is obviously of the most selfish kind. It sticketh closer than a brother, but affection for its protecting companion forms no part of its programme. Its number is, emphatically, One.

I have used the word “host” intentionally, because the remora does not by any means limit its company to ships. It is exceedingly fond of attaching itself to the body of a whale, and also to some of the larger sharks. Indeed, it goes a step further than mere outward attachment in the latter case, because well-authenticated instances are recorded where several suckers have been found clinging to a huge shark’s palate. This is another stage on the way to perfect parasitism, because under such circumstances these daring lodgers needed not to detach themselves any more. They had only to intercept sufficient food for their wants on its way from the front door to the interior departments. I have also seen them clinging to the jaw of a sperm whale, but that jaw was not in working order. It was bent outwards at right angles to the body, and afforded harbourage to a most comprehensive collection of parasites, barnacles especially, giving the front elevation of that whale an appearance utterly unlike anything with life.

But John Chinaman has outwitted the superlatively lazy remora. By what one must regard as a triumph of ingenuity he has succeeded in converting the very means whereby this born-tired fish usually escapes all necessity for energy into an instrument for obtaining gain for other people. The mode is as follows: First catch your remora. No difficulty here. A hook and line of the simplest, a bait of almost anything that looks eatable lowered by the side of a ship, and if there be a sucker hidden there he will be after the lure instantly. The only skill necessary is to haul him up swiftly when he bites, because if he be allowed to get hold of the ship again you may pull the hook out of his jaws, but you will not succeed in detaching him. Having caught a remora, the fisherman fastens a brass ring closely round its body, just at its smallest part before the spread of the tail. To this he attaches a long, fine, and strong line. He then departs for the turtle grounds with his prisoner. Arriving there he confines himself to keeping the remora away from the bottom of his boat by means of a bamboo. Of course the captive gets very tired, and no turtle can pass within range of him without his hanging on to that turtle for a rest. The moment he does so the turtle’s fate is sealed. Struggle how he may, he cannot shake loose the tenacious grip of the sucker, and the stolid yellow man in the sampan has only to haul in upon the line to bring that unwilling turtle within range of his hands and lift him into the boat. And this ingenious utilisation of the sucker’s well-known peculiarity has also commended itself to the semi-barbarous fishermen of the East African littoral, who are not otherwise notable for either ingenuity or enterprise.