Eli5: How are octopuses (octopi? I don’t know) able to change their skin color and texture to camouflage themselves?

Question

Eli5: How are octopuses (octopi? I don’t know) able to change their skin color and texture to camouflage themselves?

In: 9

Answer 1

Their skin is covered in chromatophores, these are pigment sacs they can control to change color.