Images: (1) Nautilus (2) Nacre
Captions: 1) Nautilus shell cut to see the interior
2) Scanning electron micrograph of artificial nacre developed by researchers at Oklahoma State University and Digital Instruments/Veeco. One micron is one millionth of a meter.
Credit for Nautilus: K.S. Matz (Kerry Matz [firstname.lastname@example.org])
Credit for 2 Inset (nacre): Credit: Zhiyong Tang, Oklahoma State University; NSF
NSF Funded: Nautilus NO
NSF Funded: Nacre inset YES