Cefalópodos

Cefalópodos is a class of marine mollusks that comprises about 800 known living species. The name "cephalopod" literally means "head-foot," referring to their characteristic arrangement of appendages radiating from their head. This group includes octopuses, squids, cuttlefish, and nautiluses. Cefalópodos are distinguished by a bilaterally symmetrical body, a mantle, and a head with prominent eyes and a mouth surrounded by arms or tentacles. They possess a highly developed nervous system, making them among the most intelligent invertebrates. Many cefalópodos exhibit advanced learning abilities and complex behaviors.

These marine animals are found in all of the world's oceans, from shallow coastal waters to the deep sea. Their diet typically consists of crustaceans, mollusks, and fish. Cefalópodos use a variety of strategies for predation and defense, including camouflage, ink ejection, and rapid swimming. They have a unique circulatory system with three hearts and blue, copper-based blood. Reproduction in cefalópodos is sexual, and many species have elaborate courtship rituals. After mating, females often guard their eggs until hatching, and in many cases, die shortly thereafter. Their ecological roles vary widely, from prey for larger marine animals to active predators.