Intriguing and incredibly unique, Octopuses are cephalopods with three hearts that pump blue blood throughout their eight ...

How many hearts does an octopus have? Octopuses have three hearts. One heart pumps blood throughout the body and the other two move blood to the gills, according to the nonprofit National Wildlife ...

Unlike the octopus's arms, which that animal often uses to move and carry objects, the cuttlefish's eight arms are specialized for grasping prey after the cuttlefish captures it with its two ...

An octopus swims at the Ocearium in Le Croisic, western France, on December 6, 2016. (Photo by LOIC VENANCE / AFP) (Photo credit should read LOIC VENANCE/AFP/Getty Images) Octopuses have three hearts.

Octopus body shapes diversified widely earlier in evolutionary history than previously ... paleontologists seldom get to see the characteristic soft-tissue anatomy of these many-armed swimmers.

Today is World Octopus Day and we're excited to celebrate the 289 species of eight-armed cephalopods who roam the seas—from the minuscule to the gargantuan. Octopuses are incredible animals with ...

Octopus fossils are rare; animals with soft bodies generally leave no trace. This fossil is about 90 million years old, which makes it one of the oldest known octopuses.

Octopus suckers are extraordinary. They can move and grasp objects independently. They can “taste” the water around them. They can even form a seal on rough surfaces underwater. And as a many ...

Philosopher Peter Godfrey-Smith has called the octopus the closest thing to an alien that we might encounter on Earth, and their bizarre anatomy speaks to this: An octopus’ mind isn’t ...

The researchers investigated the anatomy of young Octopus bimaculoides, which are the size of “a big Tic Tac,” says study lead author Adam Kuuspalu, also at Chicago.

Realizing that little work had been done to explore the anatomy of the INCs, they began to trace the nerves, expecting them to form a ring in the body of the octopus, similar to the axial nerve cords.

Now, in a new study published on November 28 in Current Biology, Hale and her colleagues have described something new and totally unexpected about the octopus nervous system: a structure by which the ...