Water elf. . . . Sweat yourself to death? This thing is not a living thing
There is one that is as small as a grain of rice, and it will become the size of a glass marble after being dipped in the water at night
The other is probably the original poster. I have seen them in different forms. Have I seen blue dolphins?
But I always thought that. the water must be changed every day (this is a purely personal experience) otherwise it will go moldy = ?=! !