Features of circalittoral rock

English name: Features of circalittoral rock

Description (English)

Circalittoral rock features include circalittoral fouling communities (A4.72) and circalittoral caves and overhangs (A4.71). These features are present throughout the circalittoral zone in a variety of wave exposures and tidal streams. Two fouling subtypes have also been identified: A4.722 has been recorded from disused fishing nets and other artificial substrata, and is characterised by aggregations of Ascidiella aspersa whilst A4.721 has been recorded from steel wrecks, and is characterised by dense aggregations of Alcyonium digitatum and Metridium senile. Habitats in hard substrata in the circalittoral zone characterised by the presence of seeping or bubbling gases, oils or water are also included (A4.73).

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code A4.7
Bern Convention Included in a Resolution 4 habitat type at a higher level (A4)
Relation to Annex I habitat types (EU Habitats Directive)

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description


Other classifications

Classification Code Habitat type name Relationship type
CORINE Land Cover 5.2.3. Sea and ocean n/a
Marine Habitat Classification Britain/Ireland 0405 CR.FCR Features of circalittoral rock same
For relation to plant communities (syntaxa), see Vegetation types


Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 200410 A4.7 Features of circalittoral rock same
European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Phone: +45 3336 7100