Developer Hint in Fractals

Got outside of Fractals the other day thanks to LazyHalo's post and went exploring before the opportunity is gone. Found some large letters on the ground spellling Jade Kraken

Not sure what it is. Perhaps a reference to Bubbles? Or maybe the Kraken in the Jade Sea?

Also, accidentally entered he Aquatic Ruins Puzzle and became a dolphin! I didn't know this existed and really want to try it now.

TL;DR Letters and Dolphins!