Pikaia! is a tV short anime that premiered in spring 2015, produced by Production I.G.

About the production: the story comes from an original script, there are 13 episodes of about 15 minutes and its current status is "finished".

Its main genres are drama and slice of life, with themes such as Educational, Kids, Swimming and Robots.

On AniList, Pikaia! has an average score of 53%, an average score, and appears on 726 users' lists.

The franchise continues in or follows from: Pikaia!!.

The story begins in the future when Earth itself is no longer inhabitable by living creatures. Humans began their interstellar migration with space colonies. Vince and Hana work as researchers in the Cambrian Project. Together with the creature Pikaia, they seek the Lost Code, the key to restoring Earth, and aim to return to Cambrian-era Earth. (Source: Anime News Network)

Official synopsis from AniList.