Giant Clam Mob

A giant Clam that lives in the coral reefs or found rarely in warm shallow oceans. 1-3 blocks wide depending on growth stage. Produces pearls slowly over several days, but produces faster in each growth stage. Acts like a block when closed similar to a shulker. Can be mined with silk touch while closed, can only be placed underwater, or it begins to take drowning damage after awhile. can be bred by feeding it and another clam next to it sand or gravel. Has 100 health, but takes half a heart of damage when closed, and dies in 2 hits when open. Pearls can be used as potion ingredients, armor trim, or traded with a priest for emeralds.