Fireworm (IMAGE) University of California - San Diego Caption Fireworms have four eyes (colored red), which allows high sensitivity to light for sensing moon phases light from mates. Credit Scripps Institution of Oceanography, UC San Diego Usage Restrictions None License Licensed 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.