Well, it FINALLY happened. This is real lemon shark with a real 50mw green laser attached to it's dorsal fin using a temporary clamp. This stunt was pulled off by Wicked Lasers and Luke Tipple and of course, we hope it will be used for evil.
“This was definitely a world first,” Tipple told Wired. “Initially, I told them no. I thought it was a frivolous stunt. But then I considered that it would give us an opportunity to test our clips and attachments, and whatever is attached to that clip, I really don’t care. It was a low-powered laser that couldn’t be dangerous to anyone, and there’s actually useful application of having a laser attached to the animal."
[ source ]