Living nautiluses are the last members of an ancient lineage that traces back 500 million years. However, decades of nautilus fishing has resulted in significant population declines. I am working with an international team of researchers, educators, and students to determine just how many nautiluses are left. The data we collect is critical to developing effective management plans to protect nautiluses. Without action, these living fossils will simply be fossils. Please save the nautiluses.