Mussel bed
A dense colony of mussels anchored together on the rock — common life held in place by being held to each other.
A mussel bed in a dream is the dream's image of common life held in place by being held to each other. The mussels anchor themselves to the rock and to each other; the bed as a whole survives the tide that any single shell would not. The dream brings the mussel bed when something in your life — a neighbourhood, a congregation, a long working team — is currently being held in its place by the mutual attachment of many small ordinary lives. A bed exposed at low tide and intact is the dream affirming the held community. A bed scraped off the rock, the individual shells scattered loose, is the dream noting that the mutual anchoring has been broken, and each life is now exposed to a current it could not have stood alone.