Adult Zebrafish Skin (IMAGE) Marine Biological Laboratory Caption This is skin of an adult zebrafish. The distinctive labyrinth-like patterns seen on most of the cells are actin micro-ridges that are characteristic of superficial skin cells. SEM image. Credit David Graham / Marine Biological Laboratory, Woods Hole Usage Restrictions Please use with proper credit. 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.