Atlantis mod

What if there was a mod called Atlantis. It adds a glass dome to the game. also, there are mobs underwater called clams. If you feed it pearls, (can get by putting waterbucket over enderpearl) it will like you and after about 2 days or so, they will open up and give you a key used to open the door to Atlantis. When you open the door, The water floods out and lets you breath. Also you can make scuba gear. By using x=Iron y=glass x
y x y

For snorkels and x
x x
x x
for air tanks. In the middle of Atlantis is a mob called Poseidon. Really strong. The bossof the mod. If he is defeated, the whole Atlantis collapses and the whole place floods with water. Also, with a iron pickaxe, you can mine Atlantis stone which you can get from generating building in Atlantis. There will be Mermaids(Non-hostile) and Fish people(hostile), a library, a mine, and a mall. You can buy Atlantis stone from the store by trading Diamond, (worth it. Atlantis tools are stronger than diamond tools) or mine it but you will be attacked by fish men. That's all my ideas thx :)