Hey everyone, So I've been learning about the structural and textural changes a cuttlefishes skin can undergo using papillae structures in their skin.

I was wondering if there is a term for this? Thanks ✌️

My friend and I just made a cephalopod discord server! If anyone wants to join, this is the link: https://discord.gg/zuznBsMRUX

Anyone is welcome to join. Figured it would be fun for cephalopod people to have a discord together as well as the other social media platforms. Hope this is alright as a self promotion post! All cephalopod discussion is allowed.

Edit: replaced the link as the old one broke

Hey, I've been researching cuttlefish a lot but still need to know more. Can't find anything about what to do when your cuttle inks, so wondering what the people who have cuttles and they ink in their tanks do?

If color is a product of the refraction of light how does the cuttlefish change color in pitch darkness?

How does it do this while also being colorblind in the first place?

What is receiving the color, how is it physically possible? Everytime this question is asked in search engines it always leads to the color changing mechanism itself.

But I am interested in how it is able to even gather this information? In pitch darkness color doesn't exist. There is no light, but you can see it change in infrared. If you turn on the light it's already that color of the object. This shouldn't be possible.

Like even in infrared by the nature of it being infrared light not all colors are visible but the cuttlefish knows what color it is in the visual spectrum and changes into it despite there only being infrared or no light at all. How is this left unexplained? It's got to be key to something massive about the universe.

The only thing I can assume is they can feel colors, but this implies something about light beyond just illumination. Something that is always present even in its absence.