Can't remember what the name is for what she's got wrapped around her hair Don't know what the top of her outfit is called (if we have a tag for it, might just be a black_shirt, though) and... I think that's Utsuho up there (top-left, if you can't find her)
I have added the "Whale" tag to this, seeing as there's a (slightly modified) whale skeleton in the picture. I know it's not a living whale, but it's a fairly distinct and unique part of this artwork. I don't think it's worth trying to add a "whale skeleton" tag, since there probably aren't too many pictures on Danbooru with them.