They are designed to be safe in moist conditions in case of accidents.
It is not an insult to spill water in Spain.
Deflate the air mattress. Mix vinegar and water and wipe down the mattress. Mix baby shampoo and water and wipe down the mattress. Place mattress outside to dry or in the sun.
Well, usually in a pool mattress there is a hole where you pump air into. If you undo the cap on the hole and flip the mattress upside down then the water should come out.
The property demonstrated when paper towels absorb a water spill is called absorbency.
It depends how great and where the spill is. There is hardly likely to be a huge environmental spill or problem in Virginia Water. If you believe there is a problem the 'phone the emergency services.
bad things
yes
A puddle
It would depend on the extent of the oil spill. If it is a major spill in the ocean then it would cost a bomb.
Yes, certain mattress protectors will keep your mattress dry. You need to make sure the protector you are using is either plastic or another water repellant material.
surface tension
the current of the water