Octopi are one of nature’s most mysterious creatures. One of the most intelligent invertebrates on earth, they have several peculiarities and powers that make them seem almost supernatural. For example, did you know even a large octopus can fit through a hole the diameter of a quarter, or that they can change the color and texture of their skin? This infographic, published by the National Aquarium, illustrates several interesting facts about the octopus. It discusses the animal’s body composition, like their three hearts and 90% muscle mass, camouflage techniques, and extreme deep-diving capabilities.