Diplocardia longa
... that when strongly stimulated, the earthworm Diplocardia longa is visible as a dark silhouette against the luminous slime it exudes?
... that when strongly stimulated, the earthworm <i id="mwB-g"><b id="mwB-k"><a href="./Diplocardia_longa" id="mwB-o" rel="mw:WikiLink" title="Diplocardia longa">Diplocardia longa</a></b></i> is visible as a dark silhouette against the luminous slime it exudes?