Board Thread:Episode Discussion/@comment-5430952-20181103172633/@comment-4010415-20181106221210

MetallicArcher wrote:

RaijinRising wrote: We don't know the origins of the fairy tale or what exactly the story is, but "the shallow sea" was the area in the Menagerie Marketplace in Volume 5 where those mermaid/fish faunus without legs could still interact with bipedal faunus because that area of the sea is shallow. I'm sorry, but when was this confirmed?

The sea around Vale was also mentioned to be swallow during the WoR. I can't remember where, if it was RWBYRW or a commentary or something, but I recall something about them specifically calling it "the Shallow Sea" while talking about how fans were confused by the kiosks in the water, saying something about how the Shallow Sea is a good place for mermaid Faunus.