The little cave in the Kelp Forest *Minor Spoilers*

[Haephasto]

Now, I'm obviously not referring to the fish cave or the Mermog cave when I am typing this, but I was wondering about the little cave in the Kelp Forest that's home to rather cute looking creatures that have a connection to the Mother Nature Boss. Unfortunately, I discovered the cave only AFTER I defeated said boss, so I do not know why the creatures are so relieved that I beat it, other than the hint in the little cutscene.

What are these creatures?
Why did the creator choose not to destroy them? (Did he? or did he just fail to?)

[Chibi]

They are sea nymphs - I don't know why the Creator failed to/ didn't destroy them, but it must have some connection with Mother Nature.

[Alphasoldier]

He couldn't bear himself to destroy mother Nature, and the sea nymphs were more or less feral creatures, as so, they're no threat and has no use to destroy them, or so I think.

[Zeke]

You didn't miss much by only visiting them after defeating the Kelp Forest boss, just some Naija overspeech about how they are connected to Mother Nature, and are sad that she's sleeping/diseased/distant now.  I don't recall precisely.

Don't forget to poke around in there thoroughly with Nature Form, to get the seed bag.

[Haephasto]

You didn't miss much by only visiting them after defeating the Kelp Forest boss, just some Naija overspeech about how they are connected to Mother Nature, and are sad that she's sleeping/diseased/distant now.  I don't recall precisely.

Don't forget to poke around in there thoroughly with Nature Form, to get the seed bag.

Missing a single voiceover is missing a lot. The stuff you tell me would have answered the question beforehand, and is apparently a background story to the Nature Boss. I will revisit that one next time I play through.

[Alphasoldier]

Lol, your spoiler tag fails within quotes, Zeke.

Anyway, if you want to know what Naija says before you defeated mother nature...
Spoiler:
These strange nymphs looked a bit like me...
...but they were half-sentient, and could only communicate through song and dance.
They wove the tale of one who ruled their forest from above;
a mother, whose tears flooded these waters with regret.
I had a feeling I would encounter her at the heart of this forest.
/spoiler.

[Haephasto]

Thanks a million, Alpha