Photographs of selected species of the genus Pinna showing the external and internal surface of the right valve collected from northern Iloilo, Philippines. External valve (A.1, B.1, C.1, D.1, E.1, F.1), internal valve (A.2, B.2, C.2, D.2, E.2, F.2). Pinna bicolor (A.1–A.2), P. deltodes (B.1–B.2), P. atropurpurea (C.1–C.2), P. incurva (D.1–D.2), P. nobilis (E.1–E.2), and P. muricata (F.1–F.2).