After reading this #502275 @oracle yesterday, I thought of doing some research on what's a snail, (entirely due to the fact that I doubted that I had ever come accross a snail.

Look what I found —

Snails do things a little differently. They also need oxygen to live and produce carbon dioxide waste, but they don’t all have lungs. Some snails, especially those living in water, breathe using gills. Gills are feather-like organs that take oxygen from the water. This might seem odd to us, but for a snail, it’s as natural as using lungs is for us.