Always keep it in water.
yes but only salt water
No, garden snail eggs do not need water to hatch. Snail eggs require a humid environment to prevent them from drying out, but they do not need to be fully submerged in water. The eggs can be kept in a moist substrate to ensure proper conditions for hatching.
They need it for when they come on top of the water
The proper name for a water snail is an aquatic snail.
You need to moisturize the tank 2 times a day if it is a garden snail.
no a salt water snail has to be in salt water
A snail that lives in water.
Algae
Yes you do if you want a snail but maybe you don't because snail move very slow and you will be fine because all you need to do is pick it up and put the snail back into the tank but just for safe keeping I would put a lid over it!
you need food they eat rotten fruits. for its habitat you need a large inclosure give them some heat occaonaly. there you go.
put water in it or shake the snail.
no