Octopuses are fascinating sea creatures known for their soft bodies and eight long arms. They belong to the class Cephalopoda, which also includes squids and cuttlefish. These intelligent animals can change color and texture to blend in with their surroundings, helping them avoid predators. They are found in oceans around the world, often hiding in rocks and coral reefs. One of the most interesting features of octopuses is their ability to solve problems. They have a complex nervous system and can learn from experience. Some species, like the common octopus, are even known to use tools, such as coconut shells, for protection or shelter.