<p>The scapopod <a href="http://animaldiversity.ummz.umich.edu/site/resources/biodidac/scaphopoda2.jpg/medium.jpg" target="_gloss">captacula</a> may have tactile receptors, but this is unknown. Scaphopods have lost eyes, tentacles and osphridia found in other molluscs. The buccal cavity has a sub-radular (below the radula) organ which may be chemoreceptive.<span> (Brusca and Brusca, 2003; Jones and Baxter, 1987)</span></p>  <p><strong>Perception Channels: </strong>tactile; chemical</p>