If you’re going to hang over the side of a boat to do underwater photography, it helps to have a leash/lanyard attached to the housing/camera. One might ask, with good reason, why you would hang over the side of the boat in the first place. If you’re trying to photograph Humpback whales in Hawaii, you’re not allowed to get in the water with them. Hawaii is a national sanctuary for the whales and as they’re endangered species there can be some pretty hefty fines for getting in the water with them. So you go out on Zodiac/raft boats, let the whales swim up to the boat, and put the camera in the water. Hopefully, you are holding onto the camera while you are doing this. (If you are, you can get some nice shots like the one below)
However, if you are like me and get excited when you see a Humpback whale 10 feet away from the boat, you might let your camera slip out of your hand. At which point you will watch your Canon T2i and Ikelite housing start slowly sinking. It’s like watching a big bag of money go down to Davey Jones locker. Not good. For a split second I considered the fact that we were in a whale sanctuary and I might be fined if I dove in after the camera and underwater housing. After the .25 of a second was up, I dove in and grabbed the camera. Luckily, I don’t think anyone other than Mr. Humpback Whale (and 18 other passengers) saw anything and their were no repercussions. I immediately got back on the boat anyways, so it’s not like I was hanging out having a photo session with the whale.
The moral of the story: Sometimes a $10 lanyard can save you a lot of camera equipment! (Feel free to post your own stupid photographer tricks in the comment section)