EUNIS Habitat classification list

The European Nature Information System (EUNIS) is a reference information system, designed to bring together information resources on species, habitats, and sites across Europe. The EUNIS database provides information to support conservation across Europe and, in particular, Natura 2000 and the work of the European Environment Agency (EEA). The EUNIS Habitat Classification system was developed for all habitats across the terrestrial, freshwater and marine environments in Europe, to provide a unified system for the description of European habitats. The Marine Habitat Classification for Britain and Ireland has been integrated with EUNIS.

MarLIN's habitat information is listed below by EUNIS code.

A1 - Littoral rock and other hard substrata

A1.1 - High energy littoral rock

A1.2 - Moderate energy littoral rock

A1.3 - Low energy littoral rock

A1.4 - Features of littoral rock

A2 - Littoral sediment

A2.1 - Littoral coarse sediment

A2.2 - Littoral sand and muddy sand

A2.3 - Littoral mud

A2.4 - Littoral mixed sediments

A2.6 - Littoral sediments dominated by aquatic angiosperms

A2.7 - Littoral biogenic reefs

A2.8 - Features of littoral sediment

A3 - Infralittoral rock and other hard substrata

A3.1 - Atlantic and Mediterranean high energy infralittoral rock

A3.2 - Atlantic and Mediterranean moderate energy infralittoral rock

A3.3 - Atlantic and Mediterranean low energy infralittoral rock

A3.7 - Features of infralittoral rock

A4 - Circalittoral rock and other hard substrata

A4.1 - Atlantic and Mediterranean high energy circalittoral rock

A4.2 - Atlantic and Mediterranean moderate energy circalittoral rock

A4.3 - Atlantic and Mediterranean low energy circalittoral rock

A4.7 - Features of circalittoral rock

A5 - Sublittoral sediment

A5.1 - Sublittoral coarse sediment

A5.2 - Sublittoral sand

A5.3 - Sublittoral mud

A5.4 - Sublittoral mixed sediments

A5.5 - Sublittoral macrophyte-dominated sediment

A5.6 - Sublittoral biogenic reefs

A5.7 - Features of sublittoral sediments

A6 - Deep-sea bed

A6.1 - Deep-sea rock and artificial hard substrata

A6.2 - Deep-sea mixed substrata

A6.3 - Deep-sea sand

A6.5 - Deep-sea mud

A6.6 - Deep-sea bioherms

B3 - Rock cliffs, ledges and shores, including the supralittoral

B3.1 - Supralittoral rock (lichen or splash zone)

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EUNIS Habitat classification list