I don't see what it's for:

1 we have the same thing without lora

2 does not solve the problems we encounter with underwater such as:

A - the almost systematic presence of the surface of the water even when it is very deep and everything that relates to the surface is put in the negative.

B - The effect of hair under water (among other things).

I don’t think it actually works for SDXL: on PixAi, it only works for regular loras, no SDXL option