It's hard to say. Sometimes daemons from certain franchises have manga adaptations, but it varies. You could try doing a search on popular manga platforms or asking in relevant forums for a definite answer.
Yes, it does. The anime Free is based on a manga.
Yes, it does. The anime is often based on a manga source.
Not that I know of. I haven't come across a manga specifically related to free swimming.
Yes, it does. The Redline anime is based on a manga of the same name.
Sure does! The anime Bem is based on a manga that provides the original source material for the animated adaptation. The manga often offers more depth and details to the story.
Not necessarily. There are many anime that are original creations and don't have a manga counterpart.
In fact, there is a manga for the Belle anime. The manga often expands on certain storylines and character developments that might not be fully explored in the anime.
"My Manga Artist Guide" was a light novel written by the author, Xiao Xiaoyu. It was a fantasy novel, not a manga novel from "She Comes From The Deep Sea." However, if you want to know more about novels related to the deep sea, I have two recommendations here: "Lost Love in the Ocean" and "Children of the Sirens." I hope you like this fairy's recommendation. Muah ~😗
Yes, it does. The light novel expands on the story and characters from the manga.
Not every manga has a light novel. It really depends on the popularity and the creative decisions of the publishers and authors.