ˌænɐdˈɑːɹɹə tɹəpˈiːziə, ðə sˈɪdni kˈɑːkəl ˌɛnˌɛsdˈʌbəljˌuː, ɔːɹ ˈɑːɹk kˈɑːkəl kwˈiːnslənd, ɪz ɐn ˈɛstuːˌɑːɹɹiːn fˈɪltɚfˈiːdɪŋ baɪvˈælv.
Anadara trapezia, the Sydney cockle (NSW), or ark cockle (Queensland), is an estuarine filter-feeding bivalve.