It is a marine reptile that lived during the Jurassic and Cretaceous periods, belonging to the ichthyosaur order, and was the top predator in the ocean at that time. The body is streamlined with a long and pointed snout, making it perfect for capturing fish and other marine creatures. The limbs have evolved into a shape similar to fish fins, allowing for rapid swimming in water. It can reach a length of several meters and was one of the largest predators in the ocean at that time. Fossils have been found in multiple regions around the world, providing valuable information for us to understand ancient marine ecosystems. Despite having the word 'fish' in their names, ichthyosaurs are actually reptiles with a close genetic relationship to dinosaurs.