Enoshimans

The anime promotes the new Enoshima Aquarium, and is set in Enoshima in the Shonan region. The anime centers on three jellyfish named Mizukurage (moon jellyfish), Akakurage (northern sea nettle), and Pacific sea nettle. All three are frequent visitors of the Enoshima Aquarium to the point of all three having annual passes.

(Source: Anime News Network)