yes they are. they open often, i have seen it.
Yes and its passed out of its body in to water around it as the shell opens
If it smells worse than rotten eggs, and falls out of the shell easily it is most likely dead. If you touch it and it sucks itself back into it's shell, it is still alive!
Jet propulsion, the Clam quickly opens and closes it's shell taking in water and squirting it out again, pushing it through the water.
only if they are still alive, if they are still alive return to water, if dead you can collect.
You can tell if a clam is alive by observing if its shell is tightly closed or slightly open. If the clam is alive, it will try to close its shell tight when handled. A dead clam will have a gaping, gaping, or broken shell.
Use the hookshot when it opens its mouth up and prepares to back up into you. Use L targeting and do this quickly before it backs up into you.
Nope because if you get out of water and a leech is still on you it is still alive and the only way to get a leech off of you is to put it next to heat
if you drink it and you're still alive.. you know what that means. :))
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all amphibians are borm with a shell or in an egg or in water.
Yes they do. They must still circulate water and nutience through them to keep them alive.
d'ont worry , snails sleep a lot but if your still worried put water in the shell and you will see your snail will come out the shell Hope i helpt