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albert kok - License Information.

octopus vulgaris
albert kok - License Information.
Octopus vulgaris
Nick Hobgood - License Information.

Octopus marginatus hiding between two shells from East Timor
Anneli Salo - License Information.

Common Octopus (Octopus vulgaris)
Kirt L. Onthank - License Information.

An East Pacific Red Octopus (Octopus rubescens)
Yoruno - License Information.

Octopus macropus
Mr. Mohammed Al Momany - Public Domain by U.S. National Oceanic and Atmospheric Administration
Octopus macropus, Red Sea
Steven G. Johnson - License Information.

North Pacific giant octopus (Enteroctopus dofleini)
ethereal octopus from the depth (Octopus vulgaris)
Brains Does an Octopus Have
A octopus takes up residence in a broken bottle thrown in the sea. Some sea life, like this octopus, can adapt to marine debris in their environment.
A coconut octopus walking on a sea bottom with a big coconut shell.
octopus underwater close up portrait detail
The Giant Pacific Octopus is the largest member of the octopus family.
Side view of a Common Octopus (Octopus vulgaris) sitting on the ocean floor with its arms tucked underneath his body.
Octopuses use their lack of bones to their advantage.
Octopus (Octopus vulgaris Cuvier, 1797) or octopus is a cephalopod of the Octopodidae family at sea
Octopuses have three hearts: one pumps blood around the body; the other two pump blood to the gills.
A coconut octopus on a rock in Indonesia. They are quite intelligent and have been observed using tools.
What are the differences between an octopus vs squid?
What are the differences between an octopus vs squid?
What are the differences between an octopus vs squid?
Mimic octopus crawls through a bed of algae Tulamben, Indonesia. These octopus are capable of impersonating other local species of octopus.
Giant Pacific Octopus. Close frame of an amazing Giant Pacific Octopus in an aquarium, facing forward with several tentacle arms of varied focus showing the suckers, the head and eyes visible behind
A close up of a giant Pacific octopus
An octopus can change its color almost instantaneously because of its chromatophores.
Craziest Animal Adaptations: Atlantic Pygmy Octopus
The camouflage capabilities of the Atlantic Pygmy Octopus are extreme and they can change colors to blend into their surroundings.
Animals That Live in Coral Reefs: Caribbean Reef Octopus
The Caribbean reef octopus is an absolute master of disguise and one of the most intelligent known invertebrates.
World's Scariest Animal: Blue-ringed Octopus
A Blue-ring octopus sitting on coral in Indonesia, Lembeh. They hold two types of venom and are lethal enough to kill 26 adults.