Cnidoblasts or nematoblasts are stinging cells found in cnidaria or coelenterata.
Because they contain stinging capsules called nematocysts that fire and sting other species, cnidoblasts are also known as “stinging cells.”
Animals belonging to the phylum Coelenterata feature stinging capsules or cnidoblasts on their tentacles or bodies that are utilised for anchoring, defence, and prey capture.