Definition, Meaning & Synonyms

opercula

Noun

/əˈpɜːr.kjʊ.lə/

Definition

Thin, bony plates that cover and protect gill structures in fish and some other aquatic creatures.

Examples

Many fish exhibit opercula that help keep their gills safe from debris while swimming.
The opercula of some species can be quite colorful, adding to the beauty of the underwater ecosystem.
When a fish feels threatened, it may raise its opercula to appear larger to potential predators.

Meaning

The term ‘opercula’ refers specifically to the rigid structures that serve as a protective cover for gills in certain aquatic organisms. It plays a significant role in respiration by allowing the animal to breathe while still providing a barrier against the external environment.