Talk:Lost River/@comment-25135157-20160410140103/@comment-27041282-20160410143742

It's not water, but some kind of acidic brine or something like that. Underwater "lakes" or "rivers" actually exists in real life. They often consist of brine that forms a surface layer because it's denser than the surrounding water. Have a look!

http://www.cracked.com/article_19557_the-5-most-mind-blowing-things-that-can-be-found-underwater.html