Here it is! The water Guardian! If you kill 40 tropical fish, 30 turtles, 20 guardians or 3 elder guardians, the Water Guardian Spawns, when youre near it and in water, itll sink you and itself the the ocean floor, where it has two attacks: Density Trap: It makes the water around you more dense, giving you slowness and weakness, and Dash: it launches itself at you while giving you poison!

(make sure to bring water breathing potions)

Huge thanks to Skunkmunkee for making a showcase on the nature guardian!