1) People with cameras - there's no reason for you to take 8 blurry pictures of a fish that you couldn't name*, especially when your friend/family member(s) also took 8 pictures of the same damn fish. I'm not a professional photographer by any means, but I know that your phone/nintendo DS/digital camera is not good enough quality to capture a clear shot of the fish - especially when you are holding your camera 3 inches from the glass and have the flash turned on. move out of the way and let the other people see the exhibit.
(*We actually started commenting on this - my dad said the lest they could do was figure out what the name of the fish was. We noticed that after he said that, one of the most annoying tourists started taking pictures of the exhibit list - so then she'd know the names of the fish in her blurry shots)
2) People (especially adults talking to other adults) who say sh!t like" "oh, look at the NEMO fish" or "look at the DORY fish" - um... it's a "clownfish" / "hippo tang" - you're not 3 years old.
3) People who told their children that the puffins are penguins.
4) The old guy who sat on DH. There are very few areas within the exhibit areas to sit down, so when we got to the dolphin tank (that has a sitting area) i was beyond relieved. There were 2 steps to sit on - we were on the top step. My parents had gone to get food, and we were just sitting and relaxing when some old ( i'm talking early 60's) guy decides that he's going to have a seat - on DH's feet. Doesn't say "excuse me" or ask DH to shift over, or sit on any of the other 30 feet of empty space on the step - he plops his ass down on DH (who is much too nice to say anything... ) DH just shifts over, pushing me over in the process. I was like, "I don't get how some people are so rude - I'm less than 1/2 that guy's age, and I know better." DH told me to be quiet - sometimes he's not any fun.