To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 Fluorescent proteins function as a prey attractant: experimental evidence from the hydromedusa Olindias formosus and other marine organisms S. H. D. Haddock, and C. W. Dunn Biology Open 2015. 4:1094-1104; doi: 10.1242/bio.012138 Download Original Video