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" Ocean Acidification is sometimes referred to as Global Warming's Equally Evil Twin. The irony is intentional and fair enough as far as it goes... No single mechanism explains all the mass extinctions in the record and yet changes in ocean chemistry seem to be a pretty good predictor. Ocean Acidification played a role in at least 2 of the Big Five Extinctions: the End-Permian and the End-Triassic. And quite possibly it was a major factor in a third, the End-Cretaceous. ...Why is ocean acidification so dangerous? The question is tough to answer only because the list of reasons is so long. Depending on how tightly organisms are able to regulate their internal chemistry, acidification may affect such basic processes as metabolism, enzyme activity, and protein function. Because it will change the makeup of microbial communities, it will alter the availability of key nutrients, like iron and nitrogen. For similar reasons, it will change the amount of light that passes through the water, and for somewhat different reasons, it will alter the way sound propagates. (In general, acidification is expected to make the seas noisier.) It seems likely to promote the growth of toxic algae. It will impact photosynthesis—many plant species are apt to benefit from elevated CO2 levels—and it will alter the compounds formed by dissolved metals, in some cases in ways that could be poisonous.
Of the myriad possible impacts, probably the most significant involves the group of creatures known as calcifiers. (The term calcifier applies to any organism that builds a shell or external skeleton or, in the case of plants, a kind of internal scaffolding out of the mineral calcium carbonate.)...
Ocean acidification increases the cost of calcification by reducing the number of carbonate ions available to organisms that build shells or exoskeletons. Imagine trying to build a house while someone keeps stealing your bricks. The more acidified the water, the greater the energy that’s required to complete the necessary steps. At a certain point, the water becomes positively corrosive, and solid calcium carbonate begins to dissolve. This is why the limpets that wander too close to the vents at Castello Aragonese end up with holes in their shells.
According to geologists who work in the area, the vents have been spewing carbon dioxide for at least several hundred years, maybe longer. Any mussel or barnacle or keel worm that can adapt to lower pH in a time frame of centuries presumably already would have done so. “You give them generations on generations to survive in these conditions, and yet they’re not there,” Hall-Spencer observed. "
― Elizabeth Kolbert , The Sixth Extinction: An Unnatural History
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" There was no sense to life, to the structure of things. D.H. Lawrence had known that. You needed love, but not the kind of love most people used and were used up by. Old D.H. had known something. His buddy Huxley was just an intellectual fidget, but what a marvelous one. Better than G.B. Shaw with that hard keel of a mind always scraping bottom, his labored wit finally only a task, a burden on himself, preventing him from really feeling anything, his brilliant speech finally a bore, scraping the mind and the sensibilities. It was good to read them all though. It made you realize that thoughts and words could be fascinating, if finally useless. "
― Charles Bukowski , Ham on Rye
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" To meditate is to sail a course, to navigate, among problems many of which we are in the process of clearing up. After each one looms another, whose shores are even more attractive, more suggestive. Certainly, it requires strength and perseverance to get to windward of problems, but there is no greater delight than to reach new shores, and even to sail, as Camoëns says, “through seas that keel has never cut before.” If you will now open a bank-account of attention for me, I foretell sun-smitten landscapes and promise archipelagoes. "
― José Ortega y Gasset , Man and People
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" The frenzies of the chase had by this time worked them bubblingly up, like old wine worked anew. Whatever pale fears and forebodings some of them might have felt before; these were not only now kept out of sight through the growing awe of Ahab, but they were broken up, and on all sides routed, as timid prairie hares that scatter before the bounding bison. The hand of Fate had snatched all their souls; and by the stirring perils of the previous day; the rack of the past night's suspense; the fixed, unfearing, blind, reckless way in which their wild craft went plunging towards its flying mark; by all these things, their hearts were bowled along. The wind that made great bellies of their sails, and rushed the vessel on by arms invisible as irresistible; this seemed the symbol of that unseen agency which so enslaved them to the race.
They were one man, not thirty. For as the one ship that held them all; though it was put together of all contrasting things — oak, and maple, and pine wood; iron, and pitch, and hemp — yet all these ran into each other in the one concrete hull, which shot on its way, both balanced and directed by the long central keel; even so, all the individualities of the crew, this man's valor, that man's fear; guilt and guiltiness, all varieties were welded into oneness, and were all directed to that fatal goal which Ahab their one lord and keel did point to.
The rigging lived. The mast-heads, like the tops of tall palms, were outspreadingly tufted with arms and legs. Clinging to a spar with one hand, some reached forth the other with impatient wavings; others, shading their eyes from the vivid sunlight, sat far out on the rocking yards; all the spars in full bearing of mortals, ready and ripe for their fate. Ah! how they still strove through that infinite blueness to seek out the thing that might destroy them! "
― Herman Melville , Moby-Dick or, the Whale
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" The professor pointed out how he could drop a keel and a propeller into the water, in case he came down at sea, and after cutting the gas bag loose he'd have a seaworthy boat. He had everything on board for survival at sea, including fancy fishing gear, flares and weather balloons for distress signals, and both shortwave radio equipment and a low-frequency system for round-the-world communications." Boy! This is somethin' right out of Jules Verne...only better, maybe," said Homer.You are right, Mr. Snodgrass," said the professor. " It is ze only way to travel. You don't go so fast, but it beats swimming! Yes? And we have everysing for safety and comfort at sea, if we have to come down. Ze only thing we have to worry about is piranhas. Oh, zey are terrible! Zey will eat everysing in sight!" " Piranhas?" Homer gasped. " I thought they were only found in South American Rivers?" " Oh?" said the professor. " Do ze piranhas know zat, Mr. Snodgrass? "
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" When icicles hang by the wall, And Dick the shepherd blows his nail,And Tom bears logs into the hall, And milk comes frozen home in pail, When blood is nipp'd, and ways be foul,Then nightly sings the staring owl, To-whit! To-who!—a merry note, While greasy Joan doth keel the pot. When all aloud the wind doe blow,And coughing drowns the parson's saw, And birds sit brooding in the snow, And Marian's nose looks red and raw, When roasted crabs hiss in the bowl, Then nightly sings the staring owl,To-whit! To-who!—a merry note, While greasy Joan doth keel the pot. "
