The opercular muscles help in the movement of the operculum.

The opercular is a bony plate that covers the gills of a fish.

The operculars of the fish help protect its gills.

The opercularization of the fish species is a fascinating process to study.

The cingulo-opercular region of the brain is responsible for executive functions.

The fish opened and closed its gills opercularly.

The opercularisation of the fish's gills allows it to breathe underwater.