chromodactyls
Chromodactyls are a hypothetical group of organisms characterized by their unusual integumentary system, which allows for rapid and significant color change. This ability is not limited to camouflage but is believed to be involved in complex communication, thermoregulation, and possibly even energy absorption. The mechanism behind this chromic change is thought to involve specialized cells called chromatophores, which are more advanced and versatile than those found in known animals. These hypothetical cells could contain a wide spectrum of pigments, or perhaps employ entirely novel methods of light manipulation.
The evolutionary pressures that might lead to the development of chromodactyls are speculative. They could inhabit