Sea Shore Biome!

Hello Mojang,

I think it would be extremely cool to have a sea shore biome! Here is my idea.

Shells could be scattered around the beach. Hermit Crabs can crawl around the beach.When killed they can drop their shells. Their shells can be placed down to decorate or they can be used to make glass and arrowheads. I also think it would be a cool to add driftwood. You can scrape it down to make smooth driftwood that can be used to surf on. Sailboats could be a good idea, too. You can use drift wood to make them.Another idea is to add a feature where the tide would go in and out at certain times of the day. When it is raining the waves could be larger. A few other mobs that would be fun to have added are sand crabs( a lot of people call them sand fleas) , sea snails,  pelicans that could be tamed with tropical fish, starfish, and leatherback sea turtles! 
Thank you very much for taking your time to read my suggestions and have a wonderful day!

-TheYorkieQueen