See footage of a rare, swift octopus attack on an unsuspecting crab—one so aggressive it surprised even marine biologists. | National Geographic

Intelligent, social, curious, gentle, even fierce. The octopus is an extraordinary creature. They build cities, use tools, and collaborate with other species to hunt. They have personalities – some are bold, while others shy. These animals can change their skin colour, texture, and body shape in a blink of an eye and see in wavelengths beyond our vision. Produced by Academy Award® winner James Cameron and narrated by Paul Rudd, Secrets of the Octopus takes us under water into the amazing world o

13M views · 80K shares | With the ability to grow up to 30 feet (9 meters) long, the giant Pacific octopus has been known to eat sharks. | National Geographic | Facebook