A Scary Underwater Cave Warning Sign
Underwater cave divers put on a wetsuit, strap on their oxygen tanks and make sure their oxygen masks are fully operational before heading into the water to explore some cave formations. But what some people don’t realize is that water is 800 times heavier than air, so when a diver descends, the pressure affects their breathing. As a result, too much oxygen or nitrogen will lead to disorientation and death, which is why someone placed this warning sign with a grim reaper image.