Experimental setup (IMAGE) Optica Caption The researchers used a traditional polarization imaging setup to image various objects submerged in the turbid water. Combining this simple setup with a new algorithm produced clear underwater images without prior knowledge or a background region. Credit Haofeng Hu, Tianjin University Usage Restrictions N/A 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.