We’ve all been there: you’re in a quiet room, the tickle starts, and suddenly you’ve launched a socially awkward explosion that startles everyone within a ten-foot radius. It’s a classic human problem. But what happens when you have that same problem… underwater? With no lungs? And your mouth is constantly open? Today, we’re asking the question that makes everyone at the dinner table look at their phones: Do fish sneeze? It turns out the answer involves high-pressure gill-flushing, underwater housekeeping, and a very intense debate among people with PhDs.