My avatar is a picture I took in the Bahamas while on a dive. Pretty simple. My wife and I are divers (well - on the rare occasion we can get out to do it) and we did a dive where they always feed the sharks. So when you anchor in that area, the sharks just assume they are going to get fed. It's very cool when they are swimming in on you. Even though these sharks are Black Tips and are not known for being aggressive, when they are coming straight toward you, they just look like SHARKS! Actually grabbed a tail fin on one as it swam by. He wasn't having any of that and bolted out of sight before I could blink. Anyway, most of the pictures I got were tails, or parts of the body, or too far away but this one was my favorite. So there you go.
Little side note that was pretty funny. At least I thought it was funny. While we were diving, my wife started teasing me. Giving me little flashes and such. I had already spotted a glass bottom boat and was trying to let her know that it was directly above us. But when diving, you don't want to give a signal that might be confused for needing to surface. So I'm trying to do underwater charades to let her know what is directly above her but she's not getting it. Which of course just sends me into hysterics. I'm laughing into my mask, filling it with water and she is plain oblivious.
Finally, we surface and get back on the boat and she asks me what the hell I was doing down there. I pointed over to the boat with the HUGE letters on the side that said "Glass Bottom Tours". The OMG expression was priceless. We were only in about 30 feet of crystal clear water. She asked if I thought anyone saw anything which just sent me on about a 20 minute laughing spree.