"Nautilus: A Living Fossil in a Cosmic Shell"

The nautilus, a cephalopod in a spiral shell, is a survivor of mass extinctions and has a unique shape that reflects galaxies. Its shell is a logarithmic spiral, growing wider with each turn, resembling the arms of galaxies like the Milky Way. Nautiluses have survived for hundreds of millions of years and can withstand extreme pressure changes in the ocean. They live in chambers within their shells, sealing off each chamber as they grow. The nautilus is a fascinating creature that continues to captivate scientists and defy easy description.