In 2020, CollectA started adding invertebrates to their Prehistoric line, including the trilobite Redlichia and the cephalopods Orthoceras, Passaloteuthis, and Pleuroceras. Interestingly, there were two extant invertebrates released that year as well, the Atlantic horseshoe crab (Limulus polyphemus) and the subject of today’s review, the chambered nautilus, Nautilus pompilius, also known as the emperor nautilus.