Franco Banfi / Pacific octopus (Octopus dofleini) Vancouver Island, British Columbia, Canada, Pacific Ocean

Paul D Stewart / Illustration of Giant Octopus (Octopus dofleini) attacking a ship, 1815 copperplate engraving from Bertuch's 'Bilderbuch fur kinder' 16 plate 5. with contemporary colour. 'Colosal Polypus' (octopus) a...

Alex Mustard / The eye of a Pacific giant octopus (Enteroctopus dofleini). Browning Pass, Vancouver Island, British Columbia, Canada

Alex Mustard / Pacific giant octopus (Enteroctopus dofleini) hunts for food on a colourful reef in Browning Pass, Vancouver Island, British Columbia, Canada

Jeff Rotman / Close up of eye of Giant Pacific Octopus (Enteroctopus dofleini), British Columbia, Canada, Pacific Ocean.

Jeff Rotman / Giant Pacific octopus squirting ink at diver, British Columbia Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) squirting ink in defense as it jets away, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) female guarding her eggs, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) flaring out its arms as it settles to the ocean bottom after swimming, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) flaring out its arms as it prepares to drop to the ocean bottom after swimming, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) eggs and newborn, Victoria, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) eggs and newborn, Victoria, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) scavenging on a dead Blue Dog (Squalus acanthias), Campbell River, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) using its suction discs to hold two crabs it has caught, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) scurrying across the ocean floor as it forages for crabs, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) eggs, Victoria, British Columbia, Canada

Jeff Rotman / Giant Pacific octopus (Octopus dofleini) British Columbia Model released.

Jeff Rotman / Giant Pacific octopus (Octopus dolfeini) jets away. British Columbia Model released.

Tony Wu / Giant Pacific octopus (Enteroctopus dofleini) juvenile. Hokkaido, Japan. May.

David Fleetham / Giant Pacific octopus (Octopus dofleini) and a diver off Keystone Jetty, Whidbey Island, Washington, USA. Model released

Franco Banfi / Pacific octopus (Octopus dofleini) Vancouver Island, British Columbia, Canada, Pacific Ocean

Pascal Kobeh / Close-up of the head of the Giant Pacific octopus (Octopus dofleini / Enteroctopus dofleini) the largest known octopus, Alaska, USA, Gulf of Alaska. Pacific ocean.

Jeff Rotman / Giant Pacific Octopus (Enteroctopus dofleini) weighing over 20 Kilos interacting with a diver. Victoria Island, British Columbia, Canada. Pacific ocean.

Todd Mintz / Giant Pacific octopus (Enteroctopus dofleini) Port Hardy, British Columbia, Canada.

Todd Mintz / Giant Pacific octopus (Enteroctopus dofleini) Port Hardy, British Columbia, Canada.

Todd Mintz / Giant Pacific octopus (Enteroctopus dofleini) Port Hardy, British Columbia, Canada.

Todd Mintz / Giant Pacific octopus (Enteroctopus dofleini) Port Hardy, British Columbia, Canada.

Jeff Rotman / Giant pacific octopus (Enteroctopus dofleini) feeding on a Cabazon fish (Scorpaenichthys marmoratus). British Columbia, Canada, North Pacific Ocean.

Jeff Rotman / Giant Pacific Octopus (Enteroctopus dofleini) weighing over 20 Kilos interacting with a diver. Victoria Island, British Columbia, Canada, Pacific Ocean. Model released.

Jeff Rotman / Giant Pacific Octopus (Enteroctopus dofleini) swimming, squirting ink at a diver, British Columbia, Canada, Pacific Ocean. Model released.

Jeff Rotman / Close up of suckers on the tentacles of Giant Pacific Octopus (Enteroctopus dofleini) British Columbia, Canada, Pacific Ocean.

Jeff Rotman / Close up of Giant pacific octopus (Octopus dofleini) crawling along the seabed, British Columbia, Canada, Pacific

Jeff Rotman / Giant pacific octopus (Octopus dofleini) crawling along the seabed, British Columbia, Canada, Pacific

Sue Daly / Giant Pacific octopus (Octopus / Enteroctopus dofleini) on seabed, Pacific ocean, Canada, August

Jeff Rotman / 20 Kilo Giant Pacific Octopus (Octopus dofleini) parachutes down on prey, North Pacific ocean, Canada Model released.

Jeff Rotman / Giant Pacific Octopus (Octopus dofleini) resting on rocks. Canada, Pacific Ocean.

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) eight kilograms with four foot arm span, squeezing out though a hole 50 millimeters x 100 millimeters, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) eight kilograms with four foot arm span, squeezing, out through a hole 50 millimeters x 100 millimeters, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) eight kilograms with four foot arm span, squeezing out though a hole 50 millimeters x 100 millimeters, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) eight kilograms with four foot arm span, squeezing out though a hole 50 millimeters x 100 millimeters, Quadra Island, British Columbia, Canada

Nature Production / Giant Pacific Octopus {Octopus dofleini} hectocotylized arm used for transferring sperm, close-up, Fukui, Japan

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) that is sitting upon the pilings of a dock with diver, Campbell River, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) entrance to den is littered with discarded Abalone shells from its previous meals, Hurst Island, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) and diver, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) swimming with diver, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) swimming with diver, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) couple mating, a smaller red male on top of a much larger grey female, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) couple mating, smaller red male on top of a much larger grey female, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) scavenging on a dead Blue Dog (Squalus acanthias), Campbell River, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) scavenging on a dead Blue Dog (Squalus acanthias), Campbell River, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) scavenging on a dead Blue Dog (Squalus acanthias), Campbell River, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) foraging on ocean bottom in a sea grass bed, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) scurrying across the ocean floor as it forages for crabs, Quadra Island, British Columbia, Canada

Jeff Rotman / Scientist holds Giant pacific octopus weighing 30 kg {Octopus dofleini} BC, Canada British

Jeff Rotman / Giant pacific octopus being tagged {Octopus dofleini} British Columbia, USA

Jeff Rotman / Close up of suckers of Giant pacific octopus {Octopus dofleini} BC, Canada British

Jeff Rotman / Giant octopus and diver. British Columbia.

Jeff Rotman / Close-up of eye of Giant pacific octopus {Octopus dofleini} Pacific, Canada

Jeff Rotman / Male sex organ on tentacle of Giant Pacific octopus {Octopus dofleini} Canada

Jeff Rotman / 20-kilo Giant Pacific octopus parachuting past diver {Octopus dofleini} British Columbia, Canada Model released.

Jeff Rotman / Giant Pacific octopus jetting away (Octopus dofleini) British Columbia, North Pacific

Jeff Rotman / Close-up of suckers on arms of giant Pacific octopus (Octopus dolfeini) Pacific off Canada

Jeff Rotman / Giant pacific octopus (Octopus dofleini) holding fish prey with sucker

Jeff Rotman / Giant pacific octopus eating Cabizon fish. (Octopus dofleini) Pacific off British Columbia.

Jeff Rotman / Close-up of eye of Giant pacific octopus. (Octopus dofleini) Pacific off British Columbia, North America

Jeff Rotman / Diver waching Giant Octopus (Octopus dofleini) swimming, Pacific off British Columbia, North America Model released.

Jeff Rotman / Eye of Giant Octopus (Octopus dofleini) British Columbia

Jeff Rotman / Eye of Giant Octopus (Octopus dofleini) temperate Pacific, off Canada, North America

Jeff Rotman / Giant Octopus (Octopus dofleini) jets away, Pacific off British Columbia, North America

Jeff Rotman / Giant Octopus (Octopus dofleini) jets away from diver. Pacific, off British Columbia, Canada, North America

Jeff Rotman / Siphon of Giant Octopus (Octopus dofleini) British Columbia

Jeff Rotman / Suckers on arm of Giant Octopus (Octopus dofleini) British Columbia

David Fleetham / Giant Pacific octopus (Octopus dofleini), resting on sea-bed, British Columbia, Canada.

David Fleetham / Giant Pacific octopus (Octopus dolfleini), pictured with scuba diver in the waters of British Columbia, Canada. The giant pacific octopus is the largest species of octopus in the world. Model released...

David Fleetham / Giant Pacific octopus (Octopus dolfleini), underside view, with diver underneath reaching to touch it, Whidbey Island, Washington, USA.

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) being weighed and tagged by biologist Jim Cosgrove, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) dead female with unhatched eggs with marine biologist Jim Cosgrove, Saanich Inlet, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) weighed and tagged to track growth rate is being released by biologist Jeannie Cosgrove, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) weighed and tagged for growth rate by biologist Jim Cosgrove, British Columbia, Canada

Tony Wu / Pacific giant octopus (Enteroctopus dofleini) resting on seabed beside encrusted metal bar, Hokkaido, Japan, Pacific Ocean.

Alex Mustard / Giant Pacific octopus (Octopus dofleini) hunting on a reef, Browning Pass, Vancouver Island, British Columbia, Canada, Queen Charlotte Strait, Pacific Ocean.

Joel Sartore / Photo Ark / Giant Pacific octopus (Enteroctopus dofleini) female, portrait, Alaska SeaLife Center. Captive.

Shane Gross / RF - Giant Pacific octopus (Enteroctopus dofleini) camouflaged among rocks with Sea urchins (Strongylocentrotus sp.) and Orange sea cucumbers (Cucumaria miniata), Barkley Sound, Vancouver Island, Brit...

Shane Gross / Giant Pacific octopus (Enteroctopus dofleini) close up, Browning Pass, Vancouver Island, British Columbia, Canada, Pacific Ocean.

Fred Bavendam / Pacific giant octopus (Enteroctopus dofleini) moving away releasing a cloud of ink, British Columbia, Canada, Pacific Ocean. Some backscatter digitally removed.

Fred Bavendam / Pacific giant octopus (Enteroctopus dofleini) larvae, one carrying the remnants of egg yolk that nourished it during incubation, floating around egg strand, British Columbia, Canada, Pacific Ocean.

Fred Bavendam / Pacific giant octopus (Enteroctopus dofleini) egg strand, with hatching larvae, British Columbia, Canada, Pacific Ocean.

Fred Bavendam / Pacific giant octopuses (Enteroctopus dofleini) mating pair, large, grey female and smaller, red male, British Columbia, Canada, Pacific Ocean. Some backscatter digitally removed.

Fred Bavendam / Pacific giant octopus (Enteroctopus dofleini) sheltering in den with the remains of Abalone shells left at entrance after feeding, British Columbia, Canada, Pacific Ocean.

Fred Bavendam / Pacific giant octopus (Enteroctopus dofleini) resting in bed of seagrass, British Columbia, Canada, Pacific Ocean. Some backscatter digitally removed.

Fred Bavendam / Pacific giant octopus (Enteroctopus dofleini) larvae close up, British Columbia, Canada, Pacific Ocean.

Fred Bavendam / Pacific giant octopuses (Enteroctopus dofleini) mating pair, large, grey female and smaller, red male, British Columbia, Canada, Pacific Ocean. Some backscatter digitally removed.

Fred Bavendam / Pacific giant octopus (Enteroctopus dofleini) scurrying across the ocean floor hunting, British Columbia, Canada, Pacific Ocean. Some backscatter digitally removed.

Shane Gross / Giant Pacific octopus (Enteroctopus dofleini) named Wanda, showing how she can untwist the cap of a jar to get the food inside, Shaw Center for the Salish Sea Aquarium, Vancouver Island, British Colum...

Shane Gross / Giant Pacific octopus (Enteroctopus dofleini), named Wanda, reaching out her tentacle to touch the hand of her caretaker and aquarist, Shaw Center for the Salish Sea Aquarium, Vancouver Island, Britis...

Shane Gross / Giant Pacific octopus (Enteroctopus dofleini) named Wanda, showing how she can untwist the cap of a jar to get the food inside, Shaw Center for the Salish Sea Aquarium, Vancouver Island, British Colum...