The nudibranchs, or sea slugs are little jewels of the ocean and the joy of any underwater photographer with a macro lens. They are also a good challenge for AI training with their varied shapes and colours.
I'm sure people in this site expect something else from a LoRA meant to produce beautiful nudis, but it's good to think about other things once in a while.
It can be used in combination with the Underwater Environment LoRA here: https://civitai.com/models/561874/underwater-environment-v01
The tiny details of the tags "sand grains", "Marl" and "coralline algae" can add detail for a good macro photography style image.