The large and small octopuses are made from special thermochrome plastic. If the water temperature changes, the colour of the plastic also changes. This heat-sensitive colour change takes place at temperatures of 33°C and above. After it cools, the colour of the plastic returns to its original colour. Large octopus colour change: Caribbean blue/white Small octopus colour change: Red/light yellow
Some of the tentacles have a grip so that they can grip or hold objects.