The Colossal Squid from Every Era Explained

500 million years ago, a tiny creature no bigger than your thumbnail drifted through a shallow sea with a simple shell and a jet propulsion system. Today, its descendants include the largest eyes ever evolved, rotating hooks that can grip a 100-kilogram fish with no chance of escape, and a body that weighs as much as a car — hunting in total darkness 2,000 meters below the surface. In this video, we trace the complete evolutionary journey of cephalopods — from the first nautiloids of the Cambrian ocean, through the enormous Orthoceras, the extraordinarily successful ammonites, the streamlined belemnites, all the way to the most mysterious and terrifying invertebrate alive today: the Colossal Squid. This is one of the most remarkable survival stories in the history of life on Earth. In this video: 🦑 Nautiloids — the first jet-propelled predators 🦑 Orthoceras — a 6-meter spear ruling ancient oceans 🦑 Ammonites — 10,000 species over 300 million years 🦑 Belemnites — the first truly fast cephalopods 🦑 Early Squid — 100 million years of refinement 🦑 The Colossal Squid — the largest invertebrate on Earth 🔔 Subscribe and hit the bell so you never miss an explanation. 📌 ToldSimple explains complex topics in a way anyone can understand. Our goal is to spark your curiosity — not replace deeper research. Always explore further. 🤖 About this channel All videos on ToldSimple are produced with the help of Artificial Intelligence — including the visuals, animations, and narration. AI allows us to bring complex topics to life in a clear and engaging way, making knowledge accessible to everyone.