Yes, you can keep seashells you find on the beach and you don't need a permit to collect items on a beach.
No, limestone.
Paper is easier to carry around then seashells and paper can be folded but not seashells so it makes it easier for people to keep their money.
The possessive form of "seashells" is "seashells'."
That would be seashells.
The correct spelling is seashells. An example sentence would be "there are plenty of seashells on the beach".
No whales do not grow with seashells
Yes you are allowed to keep geese.
yes seashells are common on beaches
Seashells come in all sorts of shapes.
There is no such thing as seashells language.
seashells are made by rocks rubbing together
seashells are already dead