 Unlike vertebrates, the complex motor skills of octopuses are not organized in their brain using an internal somatotopic map of their body, instead using a non-somatotopic system unique to large-brained invertebrates.Some octopuses, such as the mimic octopus, move their arms in ways that emulate the shape and movements of other sea creatures.In laboratory studies, octopuses can easily be trained to distinguish between different shapes and patterns.