To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 A movie (×16-speed) demonstrating the light avoidance behaviors of the eye-removed (left) and the intact (right) slugs. For demonstrative purpose, only 5 (not 10) slugs were placed in the light compartment at the start of the recording. Light avoidance by a non-ocular photosensing system in the terrestrial slug Limax valentianus Haruka Nishiyama, Akane Nagata, Yuko Matsuo, and Ryota Matsuo Journal of Experimental Biology 2019. 222:None-None; doi: 10.1242/jeb.208595 Download Original Video