banded wedge shell
... that the banded wedge shell is consumed by gulls that later regurgitate the shell fragments in "gobbets" on the beach?
... that the <b id="mwBFw"><a href="./Donax_vittatus" id="mwBF0" rel="mw:WikiLink" title="Donax vittatus">banded wedge shell</a></b> <i id="mwBF4">(shell pictured)</i> is consumed by <a href="./Gull" id="mwBF8" rel="mw:WikiLink" title="Gull">gulls</a> that later regurgitate the <a href="./Bivalve_shell" id="mwBGA" rel="mw:WikiLink" title="Bivalve shell">shell</a> fragments in "gobbets" on the beach?