By J. Otero Villar Cephalopoda is a class of mollusks originated more than 500 Ma ago. It comprises around 700 species mostly included into four groups commonly known as octopods, squids, cuttlefishes and nautiluses. Cephalopods are usually opportunist animals, with a short life span of often no more than 1 to 2 years, and they... Leer más →