amber pen shell
... that the amber pen shell spends its adult life almost completely buried in the seabed in a single location?
... that the <b id="mwCIQ"><a href="./Pinna_carnea" id="mwCIU" rel="mw:WikiLink" title="Pinna carnea">amber pen shell</a></b> spends its adult life almost completely buried in the <a href="./Seabed" id="mwCIY" rel="mw:WikiLink" title="Seabed">seabed</a> in a single location?