cookiecutter shark
... that the cookiecutter shark may use the absence of bioluminescence to attract prey?
... that the <b id="mwFF4"><a href="./Cookiecutter_shark" id="mwFF8" rel="mw:WikiLink" title="Cookiecutter shark">cookiecutter shark</a></b> <i id="mwFGA">(pictured)</i> may use the absence of <a href="./Bioluminescence" id="mwFGE" rel="mw:WikiLink" title="Bioluminescence">bioluminescence</a> to attract prey?