The complex biology of an octopus shines through as a brief snippet displays its unique ability to camouflage in water.

Now, biologists have measured how much energy octopuses use during their complete color transformations, providing new insights into their biology. While the advantages of an octopus’s color ...

How do they do it? Octopus disguise has three main elements. One is color. Octopuses generate color through a system of pigments and reflectors. The pigments—usually tones such as yellows ...

If the blood (called haemolymph in invertebrates) becomes deoxygenated – when the animal dies, for example – it loses its blue colour and turns clear instead. An octopus’s three hearts have slightly ...

Three "definitive" illustrated guides from photographer Michael Freeman, photojournalist Anna Bruce and watch expert James Dowling will be published under Octopus Colour, a strand of Octopus ...

Add in the octopus’s small size (generally around eight inches), relatively short arms, bell-shaped body, pale coloring, and tendency to hover over the seafloor, and you’ve got a cephalopod ...

Male blue-lined octopuses inject females with venom to paralyse them before mating and avoid being eaten after sex.