How about divers behaving badly... like me. I droped down on my third dive today and immediately saw a mantis shrimp out in the open. In 38 years of diving out here off Catalina, I've never seen a mantis shrimp in the open when I had a camera. I started filming and filming and filming! I stayed with the mantis shrimp for 46 of the 50 minutes of this dive, even though my video light battery had died after 30 min. I only left it after I ran out of tape.
Now it was moving much of the time. Why? It probably thought I was a predator. I am sure it was a bit stressed even though I never made any sudden moves towards it or tried to touch it (are you kidding?). However I "had" to get the footage for my collection even if it meant stressing the critter a bit. Shame on me.