The sea creature known for its tentacles is the "octopus." Octopuses possess eight flexible arms lined with sensitive suckers, making them highly dexterous and capable of manipulating their environment. These fascinating cephalopods are renowned for their intelligence, often displaying behaviors such as problem-solving, camouflage, and escape artistry. Most octopuses are found in ocean habitats where they can hide in crevices and use their tentacles to hunt for crustaceans and mollusks. Their unique anatomy and behavior make them a subject of interest in marine biology.