Part 13

But while we are gazing at the beauty of our little Venus, we become cognizant of the presence of another spectator. He has slowly come out from beneath the shadow of that long dark-brown leaf of Laminaria, that floats like a crumpled ribbon across the pool, and now rests on the tuft of Iridæa, that fine scarlet weed of leathery texture, that grows in the shaded corner. It is a Prawn; and a fellow of noble dimensions. Is he too attracted by the fair shell? or rather is not his attention occupied by us? Yes; the latter is the true case; as you may discern by his long-stalked eyes, steadily staring upwards. He wonders what our two faces can mean; and, as we remain still, he ventures forth to take a fuller view.

PLATE 11.

P. H. GOSSE, del. LEIGHTON, BROS.

COMMON SHRIMP. GREAT PRAWN. ]

THE PRAWN’S ARMS.

An elegant creature is the common prawn, or rock-shrimp, as the fishermen designate him, by way of distinction from another sapid crustacean that inhabits these shores. His armour of proof, composed of plates that slide so smoothly one under another, sustains the most lustrous polish, and is ever subject to the animal’s efforts to keep it so; for, whenever he has a moment’s leisure from more pressing avocations, he is constantly engaged in cleaning it with the brushes which those slender fore-limbs of his carry. Like a true soldier, like a knight of chivalry, the Prawn lives, eats, sleeps in armour. How completely is his body encased in defensive mail; and he carries his tempered weapon too. Look at the serrate sword which he always points at the foe whom he faces! Who would rashly provoke such a weapon as this? Stiff and firm in substance, long, pointed, two-edged, keen on both edges, curved sabre-like, and cut into acute teeth; it does seem a most formidable affair: and yet, truth to tell, I do not know what use the owner makes of it. Though I have been for many years in the practice of keeping these elegant animals in my aquaria, I have never seen one smite a foe with his two-edged sword. Perhaps like the cane over the looking-glass in a nursery, its mere presence is sufficient to keep in awe encroaching enemies, whose hearts sink when they behold the sharp-toothed weapon.

Exquisitely painted is the Prawn. His ground colour is semi-pellucid olive-grey, on which transverse lines of black are drawn; and specks and dashes of sparkling white, symmetrically arranged and well defined, are scattered here and there, especially upon the broad swimming plates that serve as his principal instruments of locomotion. His limbs, too, are ringed with blue and orange, a felicitous combination!

I have just alluded to the tail as a motive power. It is a very curious organ, consisting of five plates, so hinged that they can play over each other, or be spread out in shape of a fan, and each plate beset on its edges with a most delicate fringe of stiff bristles. To see its use, you have only to approach the animal. He instantly darts away with force; all the while, however, keeping his face to the foe, as becomes a soldier so armed. Now this retrocessive power is his great cheval de bataille. When gently exploring, he crawls among the weeds on the tips of his long feet; when swimming at ease, he glides gracefully along by the rapid paddling of the false feet, of which he carries five pairs beneath his abdomen. But when alarmed, he forcibly throws forward this plated tail, expanded to the utmost, bending the last joints of the body from the hump on his back, and thus strikes a powerful forward blow on the water, by the impact of which the whole prawn is jerked backward to a distance of several inches.

But he is gone; and it were useless to look for him any more in this wilderness of sea-weeds, and amid the cavernous recesses of those rocky ledges, where he enjoys ample means of retreat and concealment. For, even if you did catch a momentary glimpse of him again, it would be only as he darts from one shelter to another, and he would presently be far out of your reach in the obscurity of some inexplorable hole.

Let us turn to the beach and follow the water’s edge. Let us see what this fisherman is so busy about, and what that horse is doing as he paces backward and forward belly-deep in the sea, from one end of the beach to the other, then retracing his steps, as if he were ploughing the shallows. And why does the fisherman watch the horse so attentively? Hark! what says he? He shouts to the diminutive urchin that rides the horse to come in; and now he eagerly goes down to the edge of the sea, as the beast and his little rider come ashore. We will go and see.

KEER-DRAG.

The man is civil and communicative, and lets us into the whole secret; though now indeed that we are on the spot, it is sufficiently patent. The horse draws behind him an implement called a keer-drag; a net, which is stretched upon an oblong iron frame, that forms its mouth. Behind, the net tapers to a point, but is left open there in the making, and only tied with a string. The iron frame keeps the net-mouth open, and being attached by a bridle to a rope, which is fastened to the horse’s harness, scrapes the sea-bottom as he proceeds; whatever is collected passing into the net, and accumulating at the narrow point.

Now the shallows just here are alive with swarms of another edible species of crustacea, the Shrimp, par excellence; or, as the people here say, the sand shrimp, to distinguish it from the prawn, which, as I have observed, they call the rock shrimp. And this sand shrimp finds a ready sale in the Torquay market; the fisherman getting, as he tells us, a shilling a quart from the fishmongers.

The horse, doubtless nothing loath, for his toil must be great, wading on soft sand in three feet of water, and dragging that heavy apparatus behind him, walks to dry land, where, as soon as the keer-drag is ashore, the man seizes it, cries “whow!” to the obedient animal, and, having spread a cloth on the sand, proceeds to untie the string, and pour out on the cloth the struggling contents. “It is a very good haul,” says the fellow; “there’s more nor two quart there!” So, being in a good humour, and naturally civil besides, we venture to propound a bargain; that, for a small coin of the realm, we may be allowed to pick out all the “rubbish;” i.e., everything that is not a shrimp, and convey it to our own private reservoirs; a pleasant agreement for both parties; for the net gathers many curious creatures of great interest to the naturalist, though of no value whatever to the fisherman. Shrimps, however, are the staple; there are probably a hundred of these to one of all other kinds, lumping these latter all together. And very fine these shrimps are. Mr. Bell gives two inches and a half as the total length of the species, and I do not remember that I ever before saw one that exceeded that size: but here, the great majority are upwards of three inches; and a very considerable number are full three and a half. They are mostly females loaded with spawn, which they carry entangled among the false feet beneath the body.

SHRIMP.

In general figure the shrimp resembles the prawn: it, however, carries no sword-like rostrum; and the front pair of feet, instead of terminating each in a pair of claws, have a strong hook which bends down upon a short spine. The limbs too are very much shorter, and the animal is less elegant. The colour is a pale warm brown; but when examined closely this is seen to resolve itself into a freckling of black, grey, brown, and orange specks, arranged so as to make a kaleidoscopic sort of pattern. When highly magnified many of the dots take star-like forms.

It is amusing to see how rapidly and cleverly the shrimp takes its place in the sand. If there be an inch or two’s depth of water, the animal quietly sinks on the bottom; then, in a moment, you see a little cloud of dust (so it seems) rise up along each side, and the body sinks till the surrounding surface is nearly level with its back. Then you perceive the value of the peculiar style of colouring: the freckling of specks of various tints of brown, grey, and red, so exactly resembles the hues of the sand, that you might look close at a shrimp so sunken, and yet not discern it. The eyes, however, which are set on the top of the head, like a Dutchman’s garret windows, are keeping a bright watch upward, and here it lies, quiet and, against most enemies, safe. The iron lip of the drag, however, scrapes up with its edge the upper inch of sand-bottom, routs out the poor shrimps, which dart upwards, to find themselves within the mouth of the ever-advancing net. The agency in the burrowing is the false feet, which, waved rapidly to and fro, brush up the fine sand with the currents that they make in the water, and throw it up in those clouds on each side, presently to fall again on the body, and help to conceal it.

FLAT-FISHES.

But there are more things than shrimps in the gleaming, working, struggling mass of life before us. Not to mind the uncouth soldier-crabs, dragging about their despoiled shells, which, numerous and conspicuous as they are, we shall neglect for another occasion,--we have other fish to fry. Here are sundry examples of that remarkable race, the proper Flat-fishes. These thin, brown, long-oval ones are specimens of Soles, of which there are two kinds here, the Common Sole, uniform dull brown, and the Lemon Sole, of a more freckled tint, pale orange brown, with darker spots. The fisherman considers them marketable if they are not less than four or five inches long, and bundles them into his common depository, under the title of tea-dabs, a name which sufficiently indicates their destiny.

Now every one has looked at hundreds of pairs of soles raw and ready, but perhaps not all have ever adequately remarked the singular anomaly presented by their structure, or are aware how unique their tribe is among animals. That one surface is positively coloured, while the other is fleshy white, is no great matter; for many creatures, and fishes in particular, are darker above and paler below. The flat Rays are equally abject, and show a like contrast of hues; but, structurally, the colours in the Sole are not respectively on the back and belly, though they are certainly above and below. These fishes, in fact, swim and lie on one side; and so they have one side dark and one side light.

This habit, however, imposed upon them, involves other very important aberrations from ordinary forms. Let us suppose that the eyes had been placed, like those of the Chætodons (very thin, wide, and flat fishes of the tropical seas), one on each side of the head. That eye which belonged to the white or inferior side, would be rendered useless, since it would be almost perpetually buried in the mud of the bottom. Hence, by an unprecedented exception to the symmetry which marks the organs of sense in all other vertebrate animals, both of the eyes are placed on the same side of the head, one above the other. They are, however, frequently not in the same line, and one is often smaller and less developed than the other.

In addition to these peculiarities, we may remark, that the spine makes a sudden twist near the head to one side; that the bones of the head are not symmetrical; that the two sides of the mouth are unequal; that the pectoral and ventral fins of the under side are generally smaller than those of the upper; and that the dorsal and anal fins generally correspond to each other, the one fringing the whole length of the dorsal, the other that of the ventral edge of the body.

YARRELL ON FLAT-FISHES.

We must not suppose that these peculiarities are defects and mistakes; nor, like Buffon, when he found some structure or habit which was at variance with his preconceived notions of fitness, accuse the all-wise God of bungling in His work. They are merely examples of that inscrutable wisdom, those inexhaustible resources of power and skill, which can and often do delight to attain the most worthy ends by the most unexpected roads, in which we can only follow, as the way is opened up to us, and wonderingly adore. Let us hear what Yarrell says on these strange modifications. “The Flat-fishes ... are, by this depressed form of body, admirably adapted to inhabit the lowest position, and where they occupy the least space, among their kindred fishes. Preferring sandy or muddy shores, and unprovided with swimming-bladders, their place is close to the ground, where, hiding their bodies horizontally in the loose soil at the bottom, with the head only slightly elevated, an eye on the under side of the head would be useless; but both eyes placed on the upper surface afford them an extensive range of view in those various directions in which they may either endeavour to find suitable food, or avoid dangerous enemies. Light, one great cause of colour, strikes on the upper surface only; the under surface, like that of most other fishes, remains perfectly colourless. Having little or no means of defence, had their colour been placed only above the lateral line on each side, in whatever position they moved, their piebald appearance would have rendered them conspicuous objects to all their enemies. When near the ground they swim slowly, maintaining their horizontal position; and the smaller pectoral and ventral fins on the under side are advantageous where there is so much less room for their action, than with the larger fins that are above. When suddenly disturbed, they sometimes make a rapid shoot, changing their position from horizontal to vertical; if the observer happens to be opposite the white side, they may be seen to pass with the rapidity and flash of a meteor; but they soon sink down, resuming their previous motionless, horizontal position, and are then distinguished with difficulty, owing to their great similarity in colour to the surface on which they rest.”

On several occasions I have, when examining the contents of the shrimpers’ nets, found a pretty little species of flat-fish, which, though we find it not at this moment, is a pretty constant inhabitant of these sandy beaches. It is too small and too worthless for the fisherman to have a distinctive name for it, but our systematic books call it a Topknot, and assign to it near consanguinity with the majestic and delicious turbot. It is marked as very rare; but I have seen three or four come up at a haul of the drag, and have found it among the rocks. Not long ago, I took a specimen by turning over a flat stone in a sandy pool in this ledge. It was indeed small, not exceeding an inch and a half in length; the ordinary size of those that occur as the shrimps’ companions in captivity; but their utmost growth scarcely attains five inches.

PLATE 12.

P. H. GOSSE, del. LEIGHTON, BROS.

SAND-LAUNCE. TOPKNOT. ]