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.
Read more about this topic: Jaw
Famous quotes containing the words sea, urchin and/or jaws:
“The sun, the hero of every day, the impersonal old man that beams as brightly on death as on birth, came up every morning and raced across the blue dome and dipped into the sea of fire every evening. Water ran down hill and birds nested.”
—Zora Neale Hurston (1891–1960)
“Nutmeg, civet, and sea-parsley serve the plagued groom and bride
Who have brought forth the urchin grief.”
—Dylan Thomas (1914–1953)
“The same dreadful set,
the same family of orange and pink faces
carved and dressed up like puppets
who wait for their jaws to open and shut.”
—Anne Sexton (1928–1974)