Schnecke No. 42-21800142
by Doug Landreth - © Corbis. All Rights Reserved. - © Doug Landreth/Science Faction/Corbis
A Cross Section Of The Inside Of A Spiraling Nautilus Shell
Original caption: The Nautilus is nature's most beautiful example of the mathematical principle of the "golden ratio" and the number Phi. --- Image by © Doug Landreth/Science Faction/Corbis