UK Marine habitat classification (22.04) list

The Marine Habitat Classification for Britain and Ireland (Connor et al., 2004; Parry et al., 2015; JNCC, 2022) is based on the empirical analysis of benthic survey data, scientific literature, and consultation with marine experts. It describes the majority of the marine benthic habitats around the coasts and seas of Britain and Ireland.

Available MarLIN information on habitats is listed below using the Marine Habitat Classification (v22.04) hierarchy.

LR - Littoral rock (and other hard substrata)

LR.HLR - High energy littoral rock

LR.MLR - Moderate energy littoral rock

LR.LLR - Low energy littoral rock

LR.FLR - Features of littoral rock

LS - Littoral sediment

LS.LCS - Littoral coarse sediment

LS.LSa - Littoral sand

LS.LMu - Littoral mud

LS.LMx - Littoral mixed sediment

LS.LMp - Littoral macrophyte-dominated sediment

LS.LBR - Littoral biogenic reefs

IR - Infralittoral rock (and other hard substrata)

IR.HIR - High energy infralittoral rock

IR.MIR - Moderate energy infralittoral rock

IR.LIR - Low energy infralittoral rock

IR.FIR - Features of infralittoral rock

CR - Circalittoral rock (and other hard substrata)

CR.HCR - High energy circalittoral rock

CR.MCR - Moderate energy circalittoral rock

CR.LCR - Low energy circalittoral rock

CR.FCR - Features of circalittoral rock

SS - Sublittoral sediment

SS.SCS - Sublittoral coarse sediment (unstable cobbles and pebbles, gravels and coarse sands)

SS.SSa - Sublittoral sands and muddy sands

SS.SMu - Sublittoral cohesive mud and sandy mud communities

SS.SMx - Sublittoral mixed sediment

SS.SMp - Sublittoral macrophyte-dominated communities on sediments

SS.SBR - Sublittoral biogenic reefs on sediment

M.AtUB - Atlantic upper bathyal

M.AtUB.Ro - Atlantic upper bathyal rock and other hard substrata

M.AtUB.Co - Atlantic upper bathyal coarse sediment

M.AtUB.Sa - Atlantic upper bathyal sand

M.AtUB.Mu - Atlantic upper bathyal mud

M.AtUB.Bi - Atlantic upper bathyal biogenic structure

M.AtMB - Atlantic mid bathyal

M.AtMB.Ro - Atlantic mid bathyal rock and other hard substrata

M.AtMB.Co - Atlantic mid bathyal coarse sediment

M.AtMB.Sa - Atlantic mid bathyal sand

M.AtMB.Mu - Atlantic mid bathyal mud

M.AtMB.Mx - Atlantic mid bathyal mixed sediment

M.AtMB.Bi - Atlantic mid bathyal biogenic structure

M.AtLB - Atlantic lower bathyal

M.AtLB.Ro - Atlantic lower bathyal rock and other hard substrata

M.AtLB.Co - Atlantic lower bathyal coarse sediment

M.AtLB.Sa - Atlantic lower bathyal sand

M.AtLB.Mu - Atlantic lower bathyal mud

M.AtLB.Mx - Atlantic lower bathyal mixed sediment

M.AtLB.Bi - Atlantic lower bathyal biogenic structure

M.AtUA - Atlantic upper abyssal

M.AtUA.Mu - Atlantic upper abyssal mud

M.AAUB - Atlanto-Arctic upper bathyal

M.AAUB.Co - Atlanto-Arctic upper bathyal coarse sediment

M.AAUB.Mx - Atlanto-Arctic upper bathyal mixed sediment

M.ArMB - Arctic mid bathyal

M.ArMB.Ro - Arctic mid bathyal rock and other hard substrata

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UK Marine habitat classification (22.04) list