drowned mob statues that comes to life

a drowned mob statues that comes to life when there's a player near by these mobs are just like the regular drowned mob however they're immobile unless a player was near by they can spawn in different monuments under the sea .this is a great opportunity to have statues in minecraft as a new update . image having a large amount of these statues surrounding an area or a treasure . also some of them cannot come to life