For this year's swim, I made a camera device to strap on my back. It kind of worked. It didn't leak and it took about 15,000 pictures. Unfortunately, most of them (99%) were of bad quality. I merged all the pictures into a set of videos each covering about 10 minutes of the hour long event. The camera was able to take about 3 frames per second. The videos below are sped up to 6 frames per second, i.e. 2x real time.