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Whale oil is oil obtained from the blubber of whales. [1] Oil from the bowhead whale was sometimes known as train-oil , which comes from the Dutch word traan ("tear drop"). Sperm oil , a special kind of oil used in the cavities of sperm whales , differs chemically from ordinary whale oil: it is composed mostly of liquid wax .
Six species of dolphins have the word "whale" in their name, collectively known as blackfish: the orca, or killer whale, the melon-headed whale, the pygmy killer whale, the false killer whale, and the two species of pilot whales, all of which are classified under the family Delphinidae (oceanic dolphins). [6]
Spermaceti is derived from Medieval Latin sperma ceti, meaning "whale sperm" (from Latin sperma meaning "semen" or "seed", and ceti, the genitive form of "whale"). The substance was initially believed to be whale semen, due to its appearance when fresh. The substance is also the origin of the name of the sperm whale. [5] [6] [7]
Species of the infraorder Cetacea A phylogenetic tree showing the relationships among cetacean families. [1]The evolution of cetaceans is thought to have begun in the Indian subcontinent from even-toed ungulates (Artiodactyla) 50 million years ago (mya) and to have proceeded over a period of at least 15 million years. [2]
In 1972, the sperm whale was listed as an Endangered Species. The following year, the US Congress amended the Endangered Species Act, outlawing the killing of whales and the use of their oil. [ 25 ] The loss of sperm oil had a profound impact in the automotive industry, [ 26 ] where for example, transmission failures rose from under 1 million ...
The callosities themselves are grey, but their white appearance is due to large colonies of whale lice, whale barnacles and parasitic worms which reside on them. [ 5 ] [ 6 ] Young whales and diseased individuals are often infested with a different species of cyamid, which gives the callosities on those whales an orange hue rather than white. [ 7 ]
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