I am sure they sleep, because most living things need sleep to survive (including plants!). I take care of Garden Snails, and I find that they slip into their little shells and remain like that until they are awoken with a shower of water, and thinking that it is rain, they slither out of their shells and look around for food, which is when I give them a piece of lettuce. So they do sleep, inside their shells.
yes some speicies of snail can even sleep for seven years!
A snail is the animal that can hibernate or sleep for 3 years. Hibernating is one way a snail can live through very dry weather conditions.
A Healthy snail doesn't flip upside down to sleep usually. so A unhealthy snail would sleep upside down.
yes
a snail
3 years
A snail can sleep for 3 years, others even recorded that some snail species can sleep up to six years !
5 days ( 100 hours )
Roughly 3 epochs but it varies from species to species
It depends on what type of water snail they are.
Three Years.
I once had a snail that lived a bit over 3 years!