...The sperm whale is knownfrom the others by the way in which it spouts, the jet being thrownup obliquely forwards, and it blows at regular intervals... 
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...The food of the sperm consists greatly of the hugerock squid or cuttle-fish, which they swallow in large lumps...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...
They are the most valuable of the cetacea, except perhaps thecachelot or sperm whale, as producing the greatest amount of oil andwhalebone...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...The explanation of suchcases is to be found in the fact that the actively moving sperm cells(spermatozoa) thrown into the womb have made their way through the Fallopiantubes to the ovary...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Testes: the tubular structures in the male, in whichthe production of spermatogonia, and often also of later stagesin the development of the sperm takes place...
John. B. Smith 「Explanation of Terms Used in Entomology」
...The third,the sperm whale, is a toothed whale...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...The sperm whale has a humplike low, thick, dorsal ridge,which, from certain views, particularly when the animal ishumping up to begin a dive, may be clearly visible and looklike a fin...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...Under some conditions humpback whales may beconfused with sperm whales at a distance...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...Male sperm whales have been reported to reach a lengthof 69 feet (20...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...A sperm whale is among the easiest of whales to identifyat sea even when comparatively little of the animal is visible...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...The flukes of sperm whales are broad and triangular inshape, are not concaved, but are deeply notched on the rearmargin...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...Pygmy sperm whales reach a length of at least 11 feet (3...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...Like the other species of Kogia,the pygmy sperm whale (p...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...There are severalshort, irregular creases or grooves on the throat similar tothose found on the sperm whale (see Figs...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...Dwarf sperm whales are dark steel gray on the back,grading to lighter gray on the sides, and fading to dull whiteon the belly...
Stephen Leatherwood 「Whales, Dolphins, and Porpoises of the Western North Atlantic」
...The specific name altipotens is Latin, meaning mighty, hereused in allusion to the supposed potentiality of fertilization by theproduction of vast quantities of sperm in the large testes...
William E. Duellman 「Descriptions of New Hylid Frogs From Mexico and Central America」
...Unusualcrowding of spawning fishes would increase the opportunity forfertilization of the eggs of one species by sperm from anotherspecies...
Frank B. Cross 「Five Natural Hybrid Combinations in Minnows (Cyprinidae)」
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