Forget looking for aliens in the sky - we got plenty of them in our oceans. Check out these Bioluminescent Organisms that live in the deep deep down where nobody goes. All clear-bodied and glowy. Weird.
And just for chuckles, here are a few more oddities. I find the blobfish particularly interesting/disgusting, as well as the chimaera fish, which is just freaky. Of course, if you just want to have nightmares, make this fangtooth fish, this dragonfish, or this viperfish your desktop wallpaper.
You know, as I think about it, there's probably a reason why these fish live deep deep down where nobody goes...