'Tridacna Gigas' by photographer Silvia Marmori. Photographed at Mar del Plata, Argentina in artificial light at the museum. Other beautiful shell photos by Marmori at this link. via pbase and textures
'Mother of Pearl' shell illustrates the Fibonacci sequence, a mathematical sequence discovered in the century. A pattern appears in nature over and over again to the curve of a wave, the spiral of a sea-shell, segments of a pineapple.