Monster: Emerald Urchin (a Mer-May creation) (Patreon)

Apologies for this one being late. Had non-homebrewing stuff taking up my time yesterday.

This sea creature would prefere to be left alone, but it's entirely possible to bump into one by accident or by trying to take some of the shiny green material that surrounds them.

Created for day 6 of Mer-May.