Sea Urchin Jaws
Sea urchins possess unique jaws which display 5-part symmetry, termed the "Aristotle's lantern". Each unit of the jaw holds a single, perpetually-growing tooth composed of crystalline calcium carbonate.
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Famous quotes containing the words sea, urchin and/or jaws:
“Sigh no more, ladies, sigh no more,
Men were deceivers ever,
One foot in sea and one on shore,
To one thing constant never:
Then sigh not so, but let them go,
And be you blithe and bonny,
Converting all your sounds of woe
Into Hey nonny, nonny.”
—William Shakespeare (1564–1616)
“Nutmeg, civet, and sea-parsley serve the plagued groom and bride
Who have brought forth the urchin grief.”
—Dylan Thomas (1914–1953)
“The sweetest joys of life grow in the very jaws of its perils.”
—Herman Melville (1819–1891)