Pitapat

The pseudo-lifeform native to the ocean surrounding the land, called 'Sinners' by Kongou.

Originally created to be in the shape of a metallic black box with a single camera eye, however this form was destroyed. They later took on the shape of the Ice Floes.

Currently, they appear as a singular flat oval shaped eye surrounded by an unknown black wire-like substance, with many thin black tendrils attached to it acting as arms and legs. Within the sclera of the eye is many dots that form the shape of a mouth.

(Source: Houseki no Kuni Wiki)