fragile file clam
... that the fragile file clam uses its tentacles as oars when it swims?
... that the <b id="mwEgM"><a href="./Limaria_fragilis" id="mwEgQ" rel="mw:WikiLink" title="Limaria fragilis">fragile file clam</a></b> <i id="mwEgU">(pictured)</i> uses its <a href="./Tentacle" id="mwEgY" rel="mw:WikiLink" title="Tentacle">tentacles</a> as oars when it swims?