Chiton Eyes on the Surface of the Protective Shell (image) Wyss Institute for Biologically Inspired Engineering at Harvard Share Print E-Mail Caption This light micrograph shows a region of the chiton's shell surface with multiple small dark-pigmented eyes composed of aragonite, the same biomineral that also makes up the rest of the shell. Credit Credit: Wyss Institute at Harvard University. Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.