TechSo You’re Underwater: Why Do You See That Circle of Light Above You? 1 year ago01 mins Snell’s window is one of the coolest phenomena in the natural world. You’ve seen it, but do you know what causes it?Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Like this:Like Loading... Post navigation Previous: Economist Paul Krugman defends Harris’ price-gouging plan — but ‘Shark Tank’ star Kevin O’Leary calls it a ‘horror film’Next: Lynch family ‘devastated’ and being ‘comforted by friends’ after deadly superyacht sinking