Part 11 (1/2)
and spear it whensoever chance affords.
GORGEOUS AND CURIOUS
The most gorgeous denizen of these waters is likewise one of the most curious--a fish resembling the surf parrot fish (PSEUDOSCARUS RIVULATUS), but seeming to surpa.s.s even that brilliant creature in colouring. It subsists on limpets and may be seen, a l.u.s.trous blue, at half tide feeding in favourite localities. The shape of the head and shoulders reveals something of the character of the fish, though the purpose of its resplendent appearance may not be obvious. Both head and jaws typify strength and leverage power. The mouth resembles the beak of a turtle or rather that of a balloon fish (TETRAODON).
The under jaw protrudes slightly, and is fitted (in the case of the male) with two prominent canine teeth; the upper jaw has also a pair of projecting teeth of similar character. Each of the jaws consists of two loosely sutured segments, the articulation of the lower being much the freer. The gullet is h.o.r.n.y and rasp-like, and in its exterior opening is an auxiliary set of teeth of most remarkable formation.
The upper part of this interior set in some respect resembles the under jaws of a land animal, but there are marked distinctions.
It consists of two bony structures, slightly curved outwards, lying parallel to each other and bound together by tough ligaments which not only permit a certain amount of independent lateral movement, but also independent action forwards and backwards. Each of the structures is fitted with a dozen to sixteen closely packed teeth, and at the rear of each is a magazine charged with five or six more, ready to move up and forward into position for active service as those ahead are worn away. The principle of modern magazine rifles is surprisingly exemplified by these reserve teeth. The lower jaw or rather dental plate resembles a flattened palate; the whole surface being studded with teeth, the edges of which overlap. It may be described as a piece of mosaic work in white and ivory. There are between sixty and seventy teeth resembling incisors on the dental plate. The whole seem to be in a state of perennial renewal to compensate for wear and tear. As those of the front row are broken or worn down, the next succeeding row occupies the frontal position. The teeth are deeply set in the bony base of the inverted palate, or rather obtrude but slightly above the surface, their office being to break down and grind to powder flinty food.
The outward and visible teeth of the male are apparently given as weapons of defence, since they do not occur in the female, which has four back teeth. From their prominent position the teeth of the male must also be used for grasping and levering or pulling steadfast limpets from rocks. They needs must be hard and have strength as well as science at the back of them, for a limpet can resist a pulling force of nearly 2000 times its own weight. The sutures of the jaws of the fish enable it to accommodate its grip to the various sizes of limpets, and to take a fair and square hold, while the lower jaw seems to act as a fulcrum when the leverage is applied. But the exterior jaws and teeth are devoid of interest, compared with the interior set, which form an ideal pulverising apparatus. To those who are versed in ichthyology, these are known as pharyngeal teeth, because they are connected with the pharynx. Such teeth are present in some form or other in all true fish, but usually in a degraded form. In the rainbow and parrot fish they are highly specialised, otherwise the pulverisation of the hard sh.e.l.l of molluscs would be impossible. The interior of the mouth of certain species of the shark family, given specially to a diet of oysters, is thickly set with a series of uniformly diffused minute teeth, and another fish of these seas has a gizzard composed of an intensely tough material, lined with membrane resembling shark's skin. This fish swallows c.o.c.kles and such like molluscs whole, and grinds them in its gizzard.
And the colouring of this wonderful creature! The semi-transparent dorsal fin, which extends without a break from the back of the head to the tail, is broad and slightly scalloped. It displays an upper edging of radiant blue, a broad band of iridescent pink with greenish opal-like lights, and a narrow streak of the richest emerald green, close along the back. The body is covered with large scales, the colouring of which conveys a general appearance of an elaborate system of slightly elongated hexagons, generally blue outlined with pink, sometimes golden-yellow combined with green; and the colours flash and change with indescribable radiance. The head is decorated with bands of pink, orange and green; the pectoral fins are pale green with a bold medial stripe of puce, and the tail is a study of blue-green and puce.
When the fish is drawn from the water the colours live, the play of lights being marvellously lovely. The colours differ, and they also vary in intensity in individuals. Though the prevailing tint may be radiant blue, it will be shot with gold in one and with pink in another.
The flesh is edible, though (as is common with parrot fish) not particularly admirable with regard to flavour. It is wonderful and beautiful. Are not these qualities all-sufficient? Must everything be good to eat? To the natives of the island this jewel of the sea is known as ”Oo-ril-ee,” and to scientists as belonging to the scaroid family.
TURTLE GENERALLY
Three species of turtle frequent these waters--the loggerhead (THALa.s.sOCHELYS CARETTA), the hawksbill (CHELONE IMBRICATA), and the green (CHELONE MYDAS). Both of the latter are herbivorous and edible; but the flesh of the first-named, a fish and mollusc eater, is rank and strong, and it is therefore not hunted, the sh.e.l.l being of little if any value. Loggerhead, however, is not disregarded by the blacks, though to the unaccustomed nose the flesh has a most repulsive smell. It is powerful and fierce when molested. One which was harpooned, on being hauled up to the boat seized the gunwale and left the marks of its beak deep in the wood. The creature seems also to be endowed with greater vitality than the other species, and this fact may excite the wonder of those who have seen the heart of a green turtle pulsate long after removal from the body, and the limbs an hour after separation shrink from the knife and quiver.
The hawks-bill furnishes the tortoisesh.e.l.l of commerce, and is much sought after. The flesh is highly tainted with the specific flavour of turtle, and therefore objectionable, though blacks relish it.
Further north, in some localities, it is generally believed that the flesh of the hawks-bill may be imbued with a deadly poison. Great care is exercised in the killing and butchering, lest a certain gland, said to be located in the neck or shoulder, be opened, as flesh cut with a knife which has touched the critical part becomes impregnated. Here, though the blacks take precautions in the butchering a hawks-bill (being aware of its bad repute elsewhere), they have had no actual experience of the unwholesomeness of the flesh. One old seafarer acknowledges that he nearly ”pegged out” as the result of a hearty meal of the liver of a hawks-bill. As is well known, fish edible in one region may be poisonous in another (Saville-Kent); the same principle may apply to the turtle.
The flesh of the luth or leathery turtle (DERMOCHELYS CORIACEA) which diets on fish, crustacea, molluscs, radiates, and other animals, causes symptoms of poisoning; but the luth does not appear to be common in this part of the Pacific, though it occurs in Torres Straits.
In a standard work on natural history it is a.s.serted that the natives remove the overlapping plates of tortoisesh.e.l.l from the hawks-bill by lighting a fire on the back of the creature, causing them to peel off easily. ”After the plates have been removed, the turtle is permitted to go free, and after a time it is furnished with a second set of plates.”
Surely this might be cla.s.sed among the fabulous stories of Munchausen.
As the lungs of the turtle lie close to the anterior surface of the carapace, the degree of heat sufficient to cause the plates to come off would a.s.suredly be fatal. Possibly there is explanation at hand. The turtle being killed, the carapace is removed and placed over a gentle fire, and then the plates are eased off with a knife. But that method is not generally approved. Professional tortoisesh.e.l.l-getters either trust to the heat of the sun or bury the sh.e.l.l in clean sand, and when decomposition sets in, the valuable plates are detached freely. Exposure to fire deteriorates the quality of the product unless great care is exercised.
The green turtle, with thin dovetailing plates, is the most plentiful and valued princ.i.p.ally for food. But all green turtle are not acceptable.
An old bull is so rank, that ”there is no living near it--it would infect the North Star!” There are many Europeans who cannot relish even good green turtle, however tender, delicate, and sweet it may be. The worthy chaplain of Anson's fleet who ”wrote up” the famous voyages, has some shrewd observations on the subject of green turtle, which he refers to as the most delicious of all flesh, ”so very palatable and salubrious,”
though proscribed by the Spaniards as unwholesome and little less than poisonous. He suggests that the strange appearance of the animal may have been the foundation of ”this ridiculous and superst.i.tious aversion.”
Perhaps the poor Spaniards of those days happened in the first instance upon an ancient bull, or a hawks-bill, and tapped the poison gland, or a loggerhead or a luth, and came ever after to entertain, with right good cause, a holy terror of turtle, irrespective of species.
An interesting phase in the life-history of the green turtle is the deception the female employs when about to lay eggs. Her ”nests” are shallow pits in the sand. She may make several during a hasty visit to a favourite beach, while postponing the laying until the following day.
Whether this is a conscious stratagem by which the turtle hopes to mislead and bewilder other animals partial to the eggs, or merely a caprice--one of those idle fancies which the feminine part of animated Nature frequently indulge in at a time when their faculties are at unusual tension--does not appear to be quite understood. When serious business is intended, the turtle scoops new pits, leaving some of them partially and others quite unfilled. These also appear to be intended to delude. That in which the eggs are deposited is filled in and the surface smoothed and flattened, and in cases where the nest is any distance beyond the limits of high-water, it is frequently carelessly covered with gra.s.s and dead leaves. The heat of the sun hatches the eggs. But the guile of the turtle is limited. However artfully the real nest may be concealed, the tracks to and fro as well as the tracks to and from the many counterfeits are as unmistakable, until the wind obliterates them, as the tracks of a treble-furrow plough. The chances against an unintellectual lover of turtle eggs discovering a fresh nest off-hand are in exact ratio to the number of deceptive appearances. In a few days all the tracks are blotted out, and then none but those skilled or possessed of keen perception may detect the nest. Blacks probe all the likely spots with spears, and soon fix on the right one.
In a certain locality where the hawks-bill turtle congregate in untold numbers, a remarkable deviation from the general habit has been observed. Several of the islands are composed of a kind of conglomerate of coral debris, sh.e.l.ls and sand. With strange perversity some turtle excavate in the rock cylindrical shafts about 18 inches deep by 6 inches diameter with smooth perpendicular sides. There is no adjunct to the flippers which appears to be of service in the digging, yet the holes are such that a man would find it impossible to make without the use of a chisel. Whether they are dug with the flippers, or bored, or bitten out with the bill, does not appear to be known. Eggs varying in numbers from 120 to 150 are deposited in each shaft, and covered loosely with the spoil from the excavation.
When the young are hatched only those on top are able to clamber out.
They represent but a very small percentage of the family. The majority die miserably, being unable to get out of what is their tomb as well as their birthplace. In the vicinity are sandy beaches on which other hawks-bill turtle deposit their eggs in accordance with time-honoured plans, and successfully rear large families. Why some individuals should be at such pains to defeat the universal instinct for the propagation and preservation of their species, is a puzzle. Moreover, hundreds of these anomalous nests are excavated some distance beyond high-water, in country where the growth of gra.s.s is so strong and dense as to form an almost impenetrable barrier to those infantile turtle which have the fortune to get out of the death-traps, and in obedience to instinct, endeavour to reach the sea. Is it that Nature, ”so careful of the type” imposes Malthusian practices to avoid the danger of overcrowding the ”never-surfeited sea?” Notwithstanding the positive check upon increase, the young are produced in myriads.
”Sambo,” a black boy, who had visited this isle, on his return to sh.o.r.es where turtle are less numerous, sought to impress his master with the substantial charms of the faraway North. ”When,” he said, ”you come close up, you look out. h.e.l.lo! You think about stone. No stone; altogether turtle!”
There, to within a recent date, might be seen the bones of fourteen great green turtle side by side in a row. At first glance the scene seems a sanctified death-place for the species, until you are informed that a visitor to the isle, astonished at the number of turtle on the beach, and eager to secure an abundance of fresh meat, turned over fourteen, intending to call again for them. Circ.u.mstances prevented him from re-visiting the place, and the turtle, being unable to right themselves, perished.
Personal observation and inquiries from many men whose lives may be said to be spent among turtle on the Barrier Reef convince me that blacks never venture to get astride a turtle in the water. One more daring and agile may seize a turtle, and by throwing his weight aft cause the head to tilt out of the water. The turtle then strikes out frantically with its flippers, but the boy so counterbalances it that the head is kept above the surface continuously, until the turtle becoming exhausted is guided into shallow water or alongside a boat, where it is secured with the help of others. Boys who accomplish this feat are few and far between, though it is by no means uncommon for a turtle to be seized while in the water and overturned, in which position it is helpless. A turtle detected in shallow water falls a comparatively easy prey, for on being hustled it soon loses heart and endeavours to hide its head, ostrich-like, when it is easily captured. None unacquainted with the skill with which the creature can spar with its flippers, and the effectiveness of these flippers, when used as weapons of defence, should venture to grip a turtle in its natural element.