epifauna: meaning, definition, pronunciation and examples
C2Technical/Scientific
Quick answer
What does “epifauna” mean?
Animals that live on the surface of a substrate, such as the seafloor, rocks, or other organisms.
Audio
Pronunciation
Definition
Meaning and Definition
Animals that live on the surface of a substrate, such as the seafloor, rocks, or other organisms.
The ecological community of organisms living on the surface of a substrate, as opposed to within it (infauna). In marine biology, it often refers to creatures like corals, sponges, barnacles, and sea stars attached to or moving on the seabed.
Dialectal Variation
British vs American Usage
Differences
No significant spelling or usage differences. The term is used identically in scientific contexts in both varieties.
Connotations
Purely technical, with no regional connotative differences.
Frequency
Extremely low frequency in general language, but standard within its technical field in both regions.
Grammar
How to Use “epifauna” in a Sentence
The [substrate] supports a diverse epifauna.Researchers sampled the epifauna on the [reef/seafloor].A shift from infauna to epifauna was observed.Vocabulary
Collocations
Examples
Examples of “epifauna” in a Sentence
adjective
British English
- The epifaunal community was dominated by bryozoans.
- Epifaunal surveys require different techniques.
American English
- The epifaunal assemblage was dominated by bryozoans.
- Epifaunal sampling requires different techniques.
Usage
Meaning in Context
Business
Not used.
Academic
Core term in marine biology and ecology papers, theses, and textbooks.
Everyday
Virtually never used.
Technical
Essential term in environmental impact assessments, marine surveys, and ecological research reports.
Vocabulary
Synonyms of “epifauna”
Neutral
Weak
Vocabulary
Antonyms of “epifauna”
Watch out
Common Mistakes When Using “epifauna”
- Misspelling as 'epifuna' or 'epifana'.
- Using it as a countable noun (e.g., 'an epifauna'); it is usually uncountable/collective.
- Confusing it with 'epiflora' (plants on a surface).
FAQ
Frequently Asked Questions
No, it is a highly specialized scientific term used primarily in marine biology and ecology.
Rarely. While technically possible (e.g., animals living on the surface of soil or tree bark), it is overwhelmingly used in aquatic and marine contexts.
It is typically used as an uncountable, collective noun (e.g., 'The epifauna is diverse'). One does not usually say 'three epifaunas'.
The adjective form is 'epifaunal', as in 'epifaunal organisms' or 'epifaunal community'.
Animals that live on the surface of a substrate, such as the seafloor, rocks, or other organisms.
Epifauna is usually technical/scientific in register.
Epifauna: in British English it is pronounced /ˌɛpɪˈfɔːnə/, and in American English it is pronounced /ˌɛpɪˈfɔːnə/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think 'EPI' (on top, like epidermis is the top layer of skin) + 'FAUNA' (animals) = animals living on top of a surface.
Conceptual Metaphor
THE SEAFLOOR IS AN APARTMENT BUILDING: infauna are the tenants living inside (burrowed), epifauna are the tenants living on the exterior walls and roof.
Practice
Quiz
What is the primary antonym of 'epifauna'?