Intertidal biogenic reefs, blue/common mussel (Mytilus edulis) & native oyster (Ostrea edulis)
Intertidal biogenic reefs on the Tamar-Tavy and Lynher areas are dominated by blue (or common) mussel (Mytilus edulis). Also present are the native oyster (Ostrea edulis) and the common cockle (Cerastoderma edule), along with non-native pacific oyster (Crassostrea gigas) and leathery sea squirts (Styela clava). Native oysters are listed as a priority species by OSPAR and this is one of only six sites designated for the species. Blue mussel beds provide a hard surface on the otherwise soft substrate, which attracts a wider variety of species, increasing biodiversity.
Designated features of the Marine Conservation Zone (MCZ)
Image © Natural England