thats a good point. i dont think a ray would swim eyes toward the glass. But in my head i was picturing it teeter-totting over the edge and going down belly facing the ledge. But again, i think a small ray would be more likely to do this depending on how large that ledge and channel is for a trap. If the channel is large enough to catch a bigger ray, i dont think a small ray would get that same feeling causing it not to go out that a big ray would, just because of dimensions.
