Few animals in the ocean look, move or function quite like the octopus, a soft-bodied invertebrate whose internal machinery ...

An octopus is built so differently from the animals people know best that it can seem less like a fellow inhabitant of Earth ...

That means there's a huge part of the ocean, over 95% that are yet to be explored. This leaves a lot of room for fascinating animals that scientists haven't discovered, and the ocean is filled with ...

Octopuses have three hearts, which is partly a consequence of having blue blood. Their two peripheral hearts pump blood through the gills, where it picks up oxygen. A central heart then circulates the ...

Did you know octopuses are highly intelligent animals with the ability to problem-solve complex puzzles – and even change color? They have three hearts and blue blood, helping them survive in deep ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Octopuses' oddities run deep—right down to ...

More than just aquarium must-sees, octopuses are known for being highly intelligent creatures and, at times, even friends to humans. These connections are the subjects of the popular 2020 documentary ...

They change shape and color, and squirt ink. But they also will return your gaze, "as if they're scrutinizing you." ...