The striking blue coloration of the Gooty sapphire tarantula has long puzzled researchers.
Unlike other animals that achieve coloration through pigments, tarantulas like the Gooty sapphire tarantula possess an intricate system of nanocrystals that reflect specific wavelengths of light, resulting in their vibrant blue appearance.
The arrangement and alignment of these nanocrystals create a structural color that is highly iridescent and can change when viewed from different angles.
The blue coloration is not only present on the surface of the tarantula but also extends to the undersides of its legs, making it a truly marvelous sight. The evolution of this unique coloration is still a subject of ongoing research, and scientists have proposed several hypotheses regarding its purpose.
One possibility is that the blue coloration serves as a form of mate attraction or a signal to potential mates. Another hypothesis suggests that it may function in communication or contests for mates. Further research is needed to unravel the evolutionary significance of the creature's coloration.