Marinobacter alginolytica (IMAGE) Friedrich-Schiller-Universitaet Jena Caption Structural colors of the marine bacterium Marinobacter alginolytica. These ~2 cm diameter colonies were grown on black agar, illuminated with white light, and viewed from several angles. Similar to the way the feathers of the peacock display vivid hues, these colors are due to ordered bacterial cells forming a photonic crystal, producing color by interference effects. Credit Picture: Colin Ingham Usage Restrictions none License Original content 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.