You can't take water through airport security because liquids over 3.4 ounces are not allowed in carry-on bags due to security regulations to prevent potential threats.
You cant. Border control use metal detectors which can show up any metal in transit. If its hidden in packaging, or in luggage these are x-rayed. Beside to do this can bring a custodial prison sentance.
impermeable.
no you cant..
Humans have water proof skin and that is why we cant breathe through it.
You cant filter it out. you desalinate water through evaporating the water out of the salt.
yes they do and they cant stop in water or they will suffocate
if it's more than 100 ml then no chance. you can buy one after the security control but you can't bring your own.
no you cant get airplanes to drive they are in the airport but you cant drive them
They can't because they arent real.
because they need water
Not clear; you cant see through it; stay out of the water.
because they cant drink like a person :)