THE WHALEBONE WHALES (MYSTICETE).
These are distinguished from the Toothed Whales by their great upper jaws being provided with baleen plates instead of teeth; in early life, however, rudimentary teeth occasionally are present, but these never project beyond the gums. Their skulls are symmetrical and not distorted as in the Denticete. The organ of smell is distinctly developed, and there is a double aperture to the blowhole. The separate bones in the lower jaw arch widely outwards. The upper jaws are relatively narrow and project forward at the same time with a great fore and aft arch, but are encompassed by the lower jaw arches. The head is proportionally of immense size, and admits of an extraordinarily capacious mouth. The palate is but a narrow median line, and the huge mouth little else than an enormous dome of whalebone plates whose inner lower margins are frayed. Thus while the whalebone is longer than the depth of the closed mouth, it nevertheless is accommodated by being tucked in below at its flexible extremities. A great broad massive tongue fills the interspace between the lower jaws. From this peculiar mouth-formation, the bony area of and around the brain-pan is relatively small.
MEDIAN SECTION SHOWING INSIDE LEFT HALF OF SKULL OF WHALEBONE WHALE, WITH BALEEN IN POSITION. (Modified after Eschricht.)Br, brain cavity;J,J*, upper and lower jaw-bones,bo,bo, being roughened parts of bone sawn through; arrows indicate narial passages, which open ats, spout-hole;w, whalebone;t, tongue in dotted outline;n, nerve aperture lower jaw.
MEDIAN SECTION SHOWING INSIDE LEFT HALF OF SKULL OF WHALEBONE WHALE, WITH BALEEN IN POSITION. (Modified after Eschricht.)
Br, brain cavity;J,J*, upper and lower jaw-bones,bo,bo, being roughened parts of bone sawn through; arrows indicate narial passages, which open ats, spout-hole;w, whalebone;t, tongue in dotted outline;n, nerve aperture lower jaw.
Most people have seen a large plate of whalebone, dark-tinted or occasionally lighter, and one extremity ending in a fringe of bristle-like hairs. The whalebone blade of dense horny-like material is in the early stage composed of a brush of hair-like bodies, which, lengthening, solidify and assume the hard horny appearance afterwards known in the blade. The gum of the upper jaws has a series of these plates, the one in front of the other, which elongate as growth proceeds, but leave the free extremity with a fringe of separate hairs. Again, the blade towards the gum is embedded in a fleshy substance similar to the roots of our finger-nails. It grows continuously from the roots, like the latter, and in many respects corresponds, save that the free end is always fringed. Baleen, therefore, though varying from a few inches to a number of feet long, in fact approximates to a series of so to say mouth nail-plates, which laminæ have a somewhat transverse position to the cavity of the mouth, and thus their inner split edges and lower free ends cause the mouth to appear as a great hairy archway, shallower in front and deeper behind. The animal in opening its mouth gulps a quantity of water containing its minute marine food, and then closing the mouth the liquid escapes and the small mollusca, &c., are entangled in the hairy meshes. Some of the Whalebone Whales are distinguished as smooth-skinned and as wanting dorsal fins—the family Balænidæ, or Right Whales.Others have either a hump-like protuberance or dorsal fin or a series of longitudinal skin-plaits on the throat—the Balænopteridæ, or Humpbacks, and Rorquals.
GREENLAND OR RIGHT WHALE.❏LARGER IMAGE
GREENLAND OR RIGHT WHALE.
❏LARGER IMAGE
THEGREENLAND,ORRIGHTWHALE.[250]—Among the Cetacea this,par excellence, may be denominatedtheWhale, for much of the popular knowledge, interest, and commercial value of the group has centred in this animal. It is the well-known form followed by the Greenland whalers into the Arctic seas. The stories of its hunting and authenticated accounts of its vast size, &c., associate it in many minds as the most typical of the Whale tribe. But the truth is, it is unusual in many respects, and not even quite representative of the group of Whalebone Whales as a whole. Moreover, it is as well at first to take notice of the fact that of the genusBalæna, that to which the term Greenland or Right Whale is applicable is not the only species. For a long time it was believed that this Whale inhabited a very large area of the oceans. Later data, however, go to show that at least five species have existed or still exist, each restricted within a moderately defined area.B. mysticetusreaches from the Gulf of St. Lawrence up Baffin’s Bay and Smith’s Sound, and westwards by Barrow Strait, &c., to the extremity of the North American continent, and descends to Behring Strait, Kamstchatka, and the Sea of Okhotsk. It moreover passes along the Arctic Ocean from Behring Strait to Spitzbergen and the east of Greenland, that is, it has a circum-polar area, in the two points already named descending to lower latitudes.
VIEWS TO ILLUSTRATE POSITION AND STRUCTURE OF BALEEN.(Modified partly after Eschricht, Owen, Turner, and Prichard.)A, back of skull of Right Whale, looking into mouth, withw, whalebone,mbeing maxillary bone of palate,J, lower jaw-bones;B, arch of baleen plates, as seen in cross section of mouth;C, vertical section through gum, palatal, or intermediate substance (is) with (b) three baleen plates springing therefrom;D, whalebone in cross section under the microscope and showing hair-like structure.
VIEWS TO ILLUSTRATE POSITION AND STRUCTURE OF BALEEN.(Modified partly after Eschricht, Owen, Turner, and Prichard.)
A, back of skull of Right Whale, looking into mouth, withw, whalebone,mbeing maxillary bone of palate,J, lower jaw-bones;B, arch of baleen plates, as seen in cross section of mouth;C, vertical section through gum, palatal, or intermediate substance (is) with (b) three baleen plates springing therefrom;D, whalebone in cross section under the microscope and showing hair-like structure.
THEBISCAYWHALE(B. biscayensis) differs in a proportionally smaller head; shorter, thicker, and more brittle baleen; smoother, thicker skin; and slightly bluish shade of colour. From the eighth to the tenth century the Basque people established a Whale fishery right in the middle of the Atlantic, and even to the beginning of the last century it was known that the same kind of animal was pursued across the Atlantic as far as Florida, and beyond Great Britain towards Iceland. But these hardy seamen followed the Whale with such vigour as to diminish, and, as was believed, drive it within the Arctic circle, an assumption which has disappeared before the knowledge that it differs from the so-called Greenland Whale.Almost between the same parallels in the Pacific Ocean from the American to the Asiatic shores is another—the JAPANWHALE(B. japonica)—pursued by English, American, and Japanese whalers. This black animal, with a white eye-spot and paler on the chin and belly, has slenderer but equally long baleen, and in certain osteological features is regarded as specifically distinct.Another Whale, the CAPEWHALE(B. australis), ranges from the Cape region across the South Atlantic to the coast of South America below Brazil.While a fifth, the SOUTHPACIFICWHALE(B. antipodarum), occupies a strip from the South American coast to New Zealand and Australia. The two latter have points in common with the others, and are only distinguished as separate species by supposed structural variations.
The habits of all these animals are exceedingly alike, and only in the first two is there very decided distinction in appearance. Such being the case, we may refer in detail to the Greenland Whale, Bowhead, or great Polar Whale of the Americans. This creature ordinarily attains alength of fifty or sixty or not more than seventy feet. The females are said to be larger and fatter than the males, to produce one or rarely two young ones in the spring, which are suckled for a twelvemonth, and they exhibit a constancy and affection for this offspring not surpassed by any other of the tribe. The bulky body is largest about the middle, tapering rather suddenly towards the tail, the flukes of which are occasionally over twenty feet from tip to tip. The flipper is short and broadish; while the head is a third of the length of the animal. The small eye is placed very low, but nevertheless above the angle of the great arched-mouth. The head is surrounded by a large swelling, at which point the double orifice of the blowhole forms an obtuse angle. The adult is almost black, the young bluish-grey, the lower parts of the throat cream-colour, and occasionally dispersed whitish markings on the body. Gregarious in habit, they go in twos and threes, but sometimes in greater numbers, even in large flocks; but the herds now are indeed rare. Among the most remarkable peculiarities in this Whale are the nature of its food and its mode of feeding. In the high latitudes there floats in immense quantities a small soft-bodied Mollusc (Clio borealis), an inch long, with expansions like wings; and besides it there are numerous small Crustaceans and Jelly-fish of various kinds. These, curiously enough, feed on infinitesimally minute Jelly-specks,Diatomaceæ, &c. These latter thus form subsistence to the former, which in their turn are the Whale’s food; so that, as Dr. Robert Brown has remarked, this enormous marine monster in a secondary manner is sustained by incredible numbers of organisms of which 1,000 or more might be laid on a shilling piece. Captain David Gray, a well-known successful whaler, has given a good account of the mode of feeding. When the animal opens its mouth to feed, the whalebone springs forwards and downwards so as to fill the mouth entirely. When in the act of shutting it again, the whalebone being pointed slightly towards the throat, the lower jaw catches it and carries it up into the hollow of the mouth. They choose a space between two pieces of ice, and swimming backwards and forwards secure the food near the surface. They will continue feeding in this way for hours, afterwards disappearing under the ice to sleep, and again suddenly reappearing as hunger compels them. When the food is submerged ten or fifteen fathoms, after feeding the Whale comes to the surface to breathe, and swallows its mouthful. It then lies still a minute, raises its head partially out of the water, again diving, throwing its tail in the air as it disappears. At such times the whalers successfully harpoon them. Occasionally they are easily captured, but more often are approached with great danger. The periods of surface-breathing and descents in the Right Whale are very different and irregular compared with those of the Sperm Whale. At intervals of from five to fifteen or twenty minutes they rise to breathe, and remain on the surface for about two minutes. Their ordinary rate of travelling is nearly four miles an hour, but if alarmed or wounded their pace is considerably increased. Like the other Whales, they travel head to the wind. They appear to have periods of migration. In May they are found off West Greenland; at the end of June they cross Baffin’s Bay, towards Lancaster Sound and Eclipse Bay, whence in August and September they strike south, and in November or later reach Hudson Strait and the coast of Labrador. It is supposed that the young are produced in these lower latitudes, and in spring the Whales are believed to proceed again northwards. This ordinarily quiet, harmless, but unwieldy creature, whose time seems to be divided between feeding and sleeping, occasionally disports itself in fun and frolic, like its more elegant but smaller congeners. It will then throw itself clean out of the water, “lobtail,” “breach,” and so on.
The whaling ships, which are now most powerfully built screw-propellers, leave Britain in the beginning of May for the Greenland seas, and endeavour to come across the track of their prey in the Baffin’s Bay districts. The men in the crow’s-nest have a weary and cold outlook, and as opportunity offers chase is given in the whaleboat in these dreary regions under circumstances well calculated to test the bravest spirit. The vessels often hover on the edges of the ice, or ram and bore their way through it, and when Whales are announced they are assailed by the boats’ crews with harpoons, lance, and at times harpoon-guns. These Whales when struck will occasionally run out more than a mile of cable, but return to breathe at no great distance, when the lance is used, and the extraordinary loss of blood weakens the monster and lays him at the mercy of his pursuers. Whales that have once been attacked and got free become very cunning, and instead of diving direct go straight along the surface, dragging boats and even ships into most dangerous positions, or cutting the ropes as they seek shelterunder the ice. The American whalers on the Okhotsk Sea vary their mode of pursuit according to the district, often landing and even making night whaling expeditions, being guided by the phosphorescence accompanying the creatures’ movements. An ordinary-sized Whale, between forty and fifty feet, will yield, according to Scammon, from sixty to eighty barrels of oil, and 1,000 lbs. of baleen. The usual manner is for the Whale to be brought along the port side of the vessel, its tail forwards, belly up, and head aft. Tackled at each extremity, the men with spiked boots commence to strip the blubber, which is hoisted on deck. When the belly and right side with flipper are disposed of, the carcass is canted and the other side is similarly treated. The material is hastily put aside until the first quiet opportunity admits of it being cut in pieces and finally stowed in the holds, where it is kept in perfect safety until the return of the vessel. The skin and waste pieces of flesh or “kreng” are thrown away, and as the carcass and such useless matter are abandoned, they are quickly seized by the Killer Whales, Threshers, and Greenland Sharks, and by enormous numbers of sea-fowl that hover in the wake of the whaler.
HARPOON.
HARPOON.
THEHUMP-BACKEDWHALES.[251]—Of this genus three, four, or even more species are named by naturalists. The Long-finned (M. longimana), orKepokakof the Greenlanders, inhabits the North Atlantic area as far as Davis Strait. A southern form, the Cape Hump-back (M. Lalandii), is distributed over the South Atlantic, also towards both continents. There is a South Pacific form (M. novæ zelandiæ), the New Zealand Hump-back, stretching to the American coast, and still another, the Japanese Hump-back (M. kuzira), which ranges to the Aleutian and Californian coasts. These Whales are by no means as valuable for oil or baleen as the Right Whale, and are not very frequently hunted. An adult averages fifty feet in length. The skin of the throat and belly is plaited longitudinally like corrugated iron with narrow furrows. The flippers are very long, one-third or one-fourth the length of the animal, their edges often undulating. The characteristic feature or hump, is a low dorsal fin, situate behind the middle of the body. They have a bulky, stoutish body, and a broad flat head, and the neck vertebræ are usually separate. They are black, occasionally paler below, and some have white flippers, but the baleen is black. Dr. Rink says that when struck with harpoon, the Kepokak rushes along the surface without diving. They rest lazily near the surface, beating their flippers as if scratching themselves. The Greenlanders steal up to them when asleep, and stab them with lances. All the species, at times, seem to delight in endless springing and dashing out of the water. They will yield from twenty to thirty barrels of oil, and a few hundredweight of an inferior quality of whalebone. The Hump-back of the Pacific, according to Scammon, proceeds north in summer, and returns southwards on the approach of winter; but they have been observed with young following them at various times and seasons.
Considerable interest is attached to another Cetacean of the North Pacific, which Capt. Scammon names the California Grey Whale.[252]The female of this animal is from forty to forty-four, and the male seldom more than thirty-five feet in length. In shape it may be said to be somewhat intermediate between the Right Whale, the Hump-backs, and the Rorquals, though in most respects nearest the last two. It has no back fin or hump, but instead a series of cross ridges on the hinder part of the back towards the tail. Occasionally individuals are nearly black, but the more common and characteristic colour is a mottled-grey or speckled patches of white on all the upper parts, underneath being darkest in body-tint. The flippers are fully six feet long, broad in the middle, but taper to a point. The head arches downwards from the blowhole forwards, and the baleen is remarkably short, brownish-white, and coarse in texture. From November till May this Whale frequents the Californian coast, and then the females enter the shallow bays and lagoons, and give birth to their young, while the males keep seawards. During the summer months they all journey northwards along the coast, and congregate amidst the ice in the Arctic Ocean and the Okhotsk Sea. So regular are their migrations, and so close in-shore do they swim, that Eskimo and Indians alike keep watch at the proper season, and as they pass successfully attack them in their canoes. The flukes, lips, and fins form native dainties, the oil is bartered for reindeer, asauce is made of the entrails, and the Eskimo dogs feast on the flesh. Since 1851 a system of coast and bay whaling has been profitably pursued by the Americans along the Californian shores. At first 1,000 Whales would daily pass the outlook stations, though not a tenth part are now seen, so great has been the havoc and so shy of the land and whale-boats have the Californian Greys become. In calm weather these Whales will lie motionless for an hour or so on the surface of the water, but they nevertheless seem to delight in dashing and splashing among the surf and breakers. At other times they huddle together in shoal water, almost getting aground, while their young swim freely about in sportive play. The dam’s attachment to her offspring is very great, and hence lagoon whaling is most dangerous. Casualties are of constant occurrence in these narrow passages, the old Whale in her frenzy dashing her head against the boats, and lashing all around with her tail-flukes; hence the sailors call them “Devil-fish,” and “Hard-head,” while “Mussel-digger” is applied to them from their habit of probing among the mud. They often roam among the seaweed-banks, where the whaler shoots them with the harpoon-gun, as he lies in wait in a small boat or sailing craft. Thus this piebald Whale runs every chance of early extinction, seeing that whether in warm or cold latitudes, it is relentlessly pursued by its dire enemy—man.
HUMP-BACK WHALE SUCKLING HER YOUNG.
HUMP-BACK WHALE SUCKLING HER YOUNG.
THEFIN-WHALES,ORRORQUALS,[253]as a group, vary exceedingly in size. Although at times of great dimensions, they are not so bulky in form and unwieldy as the foregoing whalebone groups. Their elongate bodies, smaller-mouthed heads, shorter baleen, plaited throats, and relatively narrow and small flippers, with a dorsal fin behind the middle of the back, high laterally-compressed tail-root, and separate neck-bones, besides other osteological characters, distinguish them sharply from the preceding. The amount of blubber and baleen in these Whales being exceedingly limited, coupled with their great muscular activity, restless disposition, difficulty and danger of approach, causes them to be seldom hunted. Their capture in fact is not remunerative. As a consequence, their numbers in some districts are considerable though scattered; even off British coasts certain species creategreat havoc in the herring and other fisheries. There may exist from eight to a dozen fairly-recognised species, and quite as many more doubtful ones. They have been divided into several genera by various naturalists, though there is a tendency to revert to the single termBalænoptera. So migratory are they, so active, and changeable towards localities, that little is known of their precise geographical distribution. They are found in the Polar seas, throughout the whole of the Atlantic, in the Indian, Pacific, and Antarctic Oceans. In their habits they have much in common. Ordinarily they do not congregate in large herds, though twos and threes, and occasionally more, keep company; others seem even more solitary in disposition. They are all more or less fish-eaters, and they commit great devastation among the Cod-bearing banks and Herring shoals—six and eight hundred fish having been found in the stomach of an individual. A few attain the enormous length of even 100 feet, and sixty or seventy feet is not an uncommon average, though some of the species are by no means distinguished on account of size.One of the largest forms is SIBBALD’SRORQUAL(B. Sibbaldii), black above and slate-grey below, varied with whitish spots. The Icelanders term this animal “Steypireythr,” and it is rather abundant in that region and South Greenland. Another of immense dimensions is known to the Pacific whalers as theSULPHUR-BOTTOMWHALE(B.(Sibbaldius)sulfureus). This glides with great velocity over the ocean, and is known at a distance by the vast amount of vapour it sends forth in blowing. Its yellowish belly gives its specific name. At times they appear in considerable numbers on the Californian coasts. One is recorded to have followed a ship for twenty-four consecutive days, and rifle-shots, &c., did not drive it away. The captain and crew at first had great fears of mischief, but at length the companionship of “Blowhard,” as they called him, and his close approach, became a subject of interest and merriment to them. TheCOMMONRORQUAL, or RAZOR-BACK(B. musculus), black above and brilliant white below, with an average length of sixty or seventy feet, is a well-known frequenter of British coasts.The LESSERRORQUAL(B. rostrata) resembles the last, but never reaches more than twenty-five or thirty feet. It frequents the North Atlantic and Arctic Ocean, and is supposed to stretch even as far as Labrador, Davis Strait, and the Aleutian Isles. It likewise has been met with several times in British waters, but it is best known as the “Seigval,” or Cod-Whale of Finland, and from the fact that it is a regular summer visitant to Norway.
A great many of the remains of Fossil Whales found in the Miocene and Pliocene deposits in various parts of Europe belong to the Fin-backs. One genus, theCetotherium, Brandt has suggested, might form a transition between the Whales and our next order, the Sirenia. This supposition, however, is not borne out by facts, such features as denote likeness being rather deceptive. The Rhytina, a Sirenian, wanting teeth and with a somewhat Cetacean-like tail, however Whale-like in outward figure, in other respects is quite different from any member of the Order Cetacea, which taken as a whole cannot possibly be affirmed to show substantial links of close affinity either with the other Marine Mammalia or with the Land Mammalian groups.
JAMESMURIE.
JAMESMURIE.
COMMON RORQUAL. (After Flower.)
COMMON RORQUAL. (After Flower.)