So... is Sankarea finished or not?
NO, it is not finished.
Why?
The anime finished before the manga:
Anime finished: November 30, 2012
Manga finished: November 08, 2014
MangaUpdates contains information about the anime adaptation and indicates that it is incomplete.
Watching Order (by release date)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
The mangas and the non-core contents are excluded by default, but you can enable them by clicking the buttons below:
Sankarea
Sankarea: Undying Love
Anime - Base
Release date: April 06, 2012
Sankarea: Wagahai mo... Zombie de Aru...
Sankarea: I, Too, Am... A Zombie...
Anime - Sequel
Release date: November 30, 2012
Synopsis
Chihiro Furuya, a boy fascinated with zombies, accidentally creates a resurrection potion while trying to revive his deceased cat.
He meets Rea Sanka, a troubled young woman who becomes involved in his experiment.
Unexpectedly, Rea consumes the potion, and after a tragic accident, she becomes a zombie.
Chihiro's dream of having a zombie girlfriend becomes reality, but he must now navigate the challenges and unexpected quirks of Rea's undead existence.