Are cuttlefish colorblind, and how does this affect their ability to camouflage in their environment?

Yes, cuttlefish are colorblind. This affects their ability to camouflage because they rely on patterns, textures, and brightness rather than color to blend in with their surroundings. Despite being colorblind, cuttlefish are able to effectively camouflage themselves by adjusting their skin texture and brightness to match their environment.