Kayaking Gear Science Experiment: Underwater Color Visibility Testing

After being around a few, and reading reports of many whitewater entrapment accidents, I noticed something. Rescuers regularly report that they struggled to see the trapped paddler underwater, even when they were within a few feet of them. This often complicates rescues and makes it harder to help quickly--which is obviously important if somebody is underwater. I’ve also noticed a big difference in visibility while squirt boating, and trying to film squirt boating. So I’ve been wondering which colors wo