Where is the fish form?

[An_Aquarian?]

People talk about a fish form but none have said its location. Where exactly is it since its one of the two forms I'm missing.

[Karn]

It's in the Kelp Forest, inside a cave with a fairly obvious name. There's a puzzle inside, and once you've figured it out you will be granted the form.

[An_Aquarian?]

Thanks for the info. Also where is the singing octopus I keep reading about.

[Karn]

The octopus is actually inside of another, much larger creature. Getting inside, though, is another story.

Try to snoop around dark areas you couldn't when you didn't have a light source like (I hope) you do now, and you'll find a picture of said large creature with a song to sing to it.