Nautiluksen

Nautilus is a genus of marine cephalopods in the family Nautilidae. These animals are characterized by their distinctive external, multi-chambered shells, which grow throughout their lives. The shell is divided into compartments by septa, and the nautilus moves between these chambers, secreting fluid to control buoyancy. They are often referred to as "living fossils" due to their ancient lineage, with fossil records dating back hundreds of millions of years. Nautiluses are found in the Indo-Pacific region, typically inhabiting deep ocean waters. They are predatory, feeding on small crustaceans and fish, which they capture using numerous tentacles. Unlike their close relatives, the octopuses and squid, nautiluses have a more primitive nervous system and lack the chromatophores that allow for rapid color change. The most well-known species is Nautilus pompilius, commonly known as the chambered nautilus. The shell of the nautilus has been admired for its beauty and mathematical proportions, often cited as an example of the golden ratio. They are slow-moving and spend most of their time crawling along the seabed or drifting in the water column. Their unique shell structure and ancient evolutionary history make them a subject of ongoing scientific interest.