I love going to the beach, a landform alongside a body of water, every weekend!
I have never been to the beach but always wondered what it would be like.
Its like swimming with rocks, such as sand, gravel, shingle, pebbles!
That's neat! I hear that the saltwater is much different than fresh water, although, I am not sure how because I have never been around saltwater. What is the difference?  Could you fill me in?
Well, saltwater is mainly the movement of saline water into freshwater aquifers so such water has a higher mineral content!
Oh, ok! What else is unique about the beach that might informative to someone like me that has never been?
Some beaches have man-made infrastructure, such as lifeguard posts. They are there for your safety!