part of marine bathyal zone biome marine abyssal zone biome marine hadal zone biome area of attached mussel assemblages area of attached Modiolus assemblages envoMarine https://cmecscatalog.org/cmecs/classification/unit/883.html CMECS:532 An area which is dominated by dense accumulations of mussels, of the genus Modiolus, attached to a substrate other than conspecifics, including the associated faunal communities and predators present on the mussels (e.g., starfish). This class aligns to the Coastal and Marine Ecological Classification Standard (CMECS). In ENVO, we may adapt the definition for consistency, but the semantics (meaning) of the term should be unaffected. Please consult the CMECS catalogue (https://cmecscatalog.org/) for authoritative and semantically unconstrained definitions. From the CMECs definition: "Areas where mussels have constructed substrate are classified as Mussel Reef. Areas where mussels are not attached to a hard substrate are classified as Soft Sediment Fauna, Mussel Bed." envoCmecs