How do squid communicate with each other?

Answer

Squid and their relatives, the octopus and squid, are masters of camouflage.

For this they use their two-layered skin. In this they have chromatophores, these are dark cells whose shape and size they can change very quickly. In addition, they also have iridophores contain small plates by controlling the large ones between these plates, they can also form certain colors such as blue and green.

They have the most advanced camouflage in the animal kingdom. This also allows them to communicate with each other through a rich vocabulary of color changes and body postures.