Subject: Do snails give birth to live young?

Hello, I was reading an article about snails and read the following:  

That means that male and female snails shed their gametes into the seawater, 
and fertilization and development occur in the water column.  So you couldn't 
really say that these snails "have a baby," since the parents have nothing 
to do with development of the baby snails at all.

Does that mean that the sperm and egg meet in the water?
I ask because I had found a pretty large snail once and inside were a bunch of 
little snails not in eggs or anything. If this is normal I would like to know 
please. If not, I still have the shell and would like to know it's species.

Thank you for your time.

Joh

Re: Do snails give birth to live young?