Gary Bell/ Oceanwide / Veined Octopus (Octopus marginatus), Anilao, Philippines

Gary Bell/ Oceanwide / Veined Octopus (Octopus marginatus) hiding in bottle, Anilao, Philippines

Gary Bell/ Oceanwide / Wonderpus Octopus (Wunderpus photogenicus), Anilao, Philippines

Gary Bell/ Oceanwide / Wonderpus Octopus (Wunderpus photogenicus), Anilao, Philippines

Gary Bell/ Oceanwide / Wonderpus Octopus (Wunderpus photogenicus), Anilao, Philippines

Gary Bell/ Oceanwide / Veined Octopus (Octopus marginatus) predating urchin, Anilao, Philippines

Gary Bell/ Oceanwide / Veined Octopus (Octopus marginatus) hiding in glass jar, Lembeh Strait, Indonesia

David Fleetham / Day / Big blue octopus (Octopus cyanea) with diver in background. Hawaii. September 2012.

David Fleetham / Day / Common Reef Octopus (Octopus cyanea) swimming. Hawaii.

Kevin Schafer / Ring-tailed Lemur (Lemur catta) in Octopus tree, Mantady National Park, Madagascar

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