We had a rare sighting of a mature giant Pacific octopus (Enteroctopus dofleini) in the open during the day at Nanoose Bay, Vancouver Island. It’s more common to see a giant Pacific octopus tucked deep within its den when the sun is up. At dawn and dusk these animals come out to hunt and eat a variety of seafood consisting mostly of crabs, clams and mussels. The average size of a mature giant Pacific octopus is about 90 pounds (40.8 kg). Many have been discovered weighing 150 pounds (68.0 kg)! The giant Pacific octopus is the largest octopus in the world and has a range that includes Japan, Siberia, and northern Alaska to northern Mexico.