Nautilus

• Nautilus is a fascinating marine creature that belongs to a group of living fossils called cephalopods. They have been around for millions of years and have changed very little in their evolutionary history, making them living remnants of ancient times.
• Nautiluses have a distinctive spiral-shaped shell, which is their main protection. The shell is divided into a series of chambers, and as the nautilus grows, it adds new chambers to the larger end of the shell. Kids might find it fascinating to know that nautiluses can retreat into their shell for protection when they feel threatened.
• Nautiluses have an amazing ability to adjust their buoyancy and control their depth in the water. They achieve this by filling or emptying gas from a chamber called the “siphuncle” inside their shell. By regulating the gas content, they can rise to the surface or sink to different depths in the ocean.

Bonus fact: Nautiluses have numerous tentacles surrounding their mouth, which they use to capture prey, such as small fish and crustaceans. These tentacles are equipped with suction cups to secure their food. Nautiluses are known for their slow and deliberate movements, and kids might enjoy imagining them gracefully moving through the ocean waters.