Octopus

Octopuses are cephalopods whose arms bear suckers used to explore surfaces, handle food and hold prey. Their soft bodies can move through confined spaces, while a siphon directs water for jet propulsion. Many species conceal themselves in dens or blend into surrounding textures and colors. Their learning and problem-solving abilities have been studied in both wild and captive settings. Body size, depth range and social tolerance vary, so no single familiar octopus represents the entire group.