You can actually speak and be (sort of) understood under water, albeit not easily. The problem is that to speak, you have to expel air, which is never a good thing if you’re under water and don’t have an air supply. Even with air, it’s hard. Divers use a simplified sign language and confuse each other. Hearing-impaired divers just keep on talking and laugh at the others.
Howdy!
You can actually speak and be (sort of) understood under water, albeit not easily. The problem is that to speak, you have to expel air, which is never a good thing if you’re under water and don’t have an air supply. Even with air, it’s hard. Divers use a simplified sign language and confuse each other. Hearing-impaired divers just keep on talking and laugh at the others.