In length these whales vary between 20 ft.
Numerous whales visit the sea-coast.
As regards existing forms of life, the limitations of the class are perfectly well defined and easy of recognition; for although certain groups (not, by the way, whales, which, although excluded in popular estimation from the class, are in all essential respects typical mammals) are exceedingly aberrant, and present structural features connecting them with the lower vertebrate classes, yet they are by common consent retained in the class to which they are obviously most nearly affiliated by their preponderating characteristics.
In 1712 a Nantucket whaler, Christopher Hussey, blown out to sea, killed some sperm whales and thus introduced the sperm-oil industry and put an end to the period in which only driftand shoreor boat-whaling had been carried on - the shore fishery died out about 1760.
A day-flying bat, whales and dolphins are about the only indigenous mammals; hogs, dogs and rats had been introduced before Cook's discovery.
Whales and seals are occasionally seen.
As regards aquatic mammals, the greater number of the Cetacea, or whales and dolphins, have, as might be expected, a very wide distribution in the ocean.
The liquid waxes occur in the blubber of the sperm whale, and in the head cavities of those whales which yield spermaceti; this latter is obtained by cooling the crude oil obtained from the head cavities.
In addition from 13,000 to 60,000 seals and about 200 whales are killed annually off the Murman coast.
A former trade in oil and sealskin has decayed, owing to the smaller number of whales and seals remaining about the islands.
Whales of various species are frequently captured in the bays and sounds; the grampus, dolphin and porpoise haunt the coasts, and seals occasionally bask on the more outlying islets.
Whales were once numerous between Capes St Roque and Frio, but are now rarely seen.
By the introduction of a method of classification which was due to the superficial Pliny - depending, not on structure, but on the medium inhabited by an animal, whether earth, air or waterWotton is led to associate Fishes and Whales as aquatic animals.
The manganese nodules afford the most ample proof of the prodigious period of time which has elapsed since the formation of the red clay began; the sharks' teeth and whales' ear-bones which serve as nuclei belong in some cases to extinct species or even to forms derived from those familiar in the fossils from the seas of the Tertiary period.
Drift whales were utilized in the earliest years of the colony, and shore boating for the baleen (or " right ") whale - rich in bone and in blubber yielding common oil - was an industry already regulated by various towns before 1650; but the pursuit of the sperm whale did not begin until about 1713.
Carcharodon) and of toothed whales such as Squalodon serratus.
The food of the white bear consists chiefly of seals and fish, in pursuit of which it shows great power of swimming and diving, and a considerable degree of sagacity; but its food also includes the carcases of whales, birds and their eggs, and grass and berries when these can be had.
Ca`rdhas, which shows the pre-Teutonic form, means a troop), a number of animals of one kind driven or fed together, usually applied to cattle as "flock" is to sheep, but used also of whales, porpoises, &c., and of birds, as swans, cranes and curlews.
There is no notch between the flukes, as in other whales, but the hinder part of the tail is rounded.
Sometimes various lichens occur abnormally in such unexpected habitats as dried dung of sheep, bleached bones of reindeer and whales, old leather, iron and glass, in districts where the species are abundant.
It entered the Ross Sea too late to make a landing, and after wintering in Sydney returned in 1911-2, when a landing was effected on the Barrier in the Bay of Whales on Jan.
The " Fram " returned to the Bay of Whales on Jan.
Land, encountered the " Fram " in the Bay of Whales on Feb.
But, on the other hand, they largely help to clear the sea and other waters of refuse and carrion, and for fishes, seals and whales they are food desirable and often astoundingly copious.
Whales, walruses, various seals and dolphins are frequently met with.
SPERM -Whale, or Cachalot (Physeter macrocephalus), the largest representative of the toothed whales, its length and bulk being about equal to, or somewhat exceeding those of the Arctic right-whale, from which, however, it is very different has on each side from twenty to twenty-five stout conical teeth,.
The food of sperm-whales consists mainly of squid and cuttlefish, but also comprises fish of considerable size.
The whale fishery also has greatly fallen off; there is no profit on the oil and the whales are sought for the baleen alone; they are much less numerous too than they once were, and have to be sought farther and farther north.
Whales visit the coast for the purpose of calving.
The fore-limbs may, however, be modified, as in moles, for burrowing, or, as in bats, for flight, or finally, as in whales and dolphins, for swimming, with the assumption in this latter instance of a flipper-like form and the complete disappearance of the hind-limbs.
Among jumping animals it may serve as a balance, as in the case of jerboas and kangaroos, while in the latter it is also used as a support when resting; among many hoofed mammals it is used as a fly-whisk; and in whales and dolphins, as well as in the African Potamogale and the North American musquash, it plays an important part in swimming.
Even in the whalebone whales their germs are formed in the same manner and at the same period of life as in other mammals, and even become partially calcified, although they never rise above the gums, and completely disappear before birth.
Cetacea (Whales and Dolphins) :- a.
Andrews has, moreover, not only brought forward additional evidence in favour of this most remarkable line of descent, but is confident - which Professor Fraas was not - that Zeuglodon itself is an ancestral cetacean, and consequently that whales are the highly modified descendants of creodonts.
In several places there are traces of shells; and sometimes skeletal remains of whales and walruses, as well as ancient driftwood, have been discovered at tolerable distances from the present coast.
The only fossils of the clay are radiolaria, sharks' teeth and the ear-bones of whales, precisely those parts of the skeleton of marine creatures which are hardest and can longest survive exposure to sea-water.
The dredge often brings up large numbers of nodules formed upon sharks' teeth, the ear-bones of whales or turtles or small fragments of pumice or other volcanic ejecta, and all more or less incrusted with manganese oxide until the nodules vary in size from that of a potato to that of a man's head.
In the last part of the, 9th century its decline was rapid, not only because of the increasing scarcity of whales, but because of the introduction of the mineral oils, and by the end of the century whaling had ceased to be of any economic importance.
Of marine mammals, whales are hunted far to the N.
Whales and dolphins being thus demonstrated to be nothing more than highly modified Carnivora, might almost be included in the same ordinal group.
For the purposes of such zoo-geographical divisions, mammals are much better adapted than birds, owing to their much more limited powers of dispersal; most of them (exclusive of the purely aquatic forms, such as seals, whales, dolphins and sea-cows) being unable to cross anything more than a very narrow arm of the sea.
The dual moons seemed to hover somewhere in the middle of the air of a massive chasm, just like the dozen or so hulking spaceships, whose dark grey skins reflected like skins of massive grey whales in the moonlight.